HAVING REVEALABLE CONCEALED INFORMATION, FRAUD PREVENTER OR DETECTOR, USE PREVENTER OR DETECTOR, OR IDENTIFIER

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This subclass is indented under the class definition.  Subject matter provided with structure or means associated with an indicia bearing article, i.e., printed matter, which either: (a) obstructs or hides information contained within or on the printed matter, such information being readable or understandable only by the use of a chemical, structure, device, or apparatus which is normally separate from or external to the printed matter, or by having knowledge of a code used with the printed matter; (b) prevents or signals an unlawful attempt or act of larceny of the printed matter, by the use of a chemical, structure, device, or apparatus which is applied to, acts upon or in some manner interacts with the printed matter; (c) prevents or signals an undesirable use of the printed matter, by the use of a chemical, structure, device, or apparatus which is applied to, acts upon or in some manner interacts with the printed matter; or (d) prevents or signals an unlawful or undesirable use of the printed matter, i.e., misrepresentation of identity.

 
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Patent Number
Title
  Date
3935960 Tamper indicator tape Feb-3-1976
An easy opening, hermetically sealed container with a preformed aperture is covered by a tape closure having on its outer surface an indicator layer which changes color when flexed, thereby indicating whether the closure has been handled or tampered with.
3989279 Latent indicia carrier Nov-2-1976
A package such as a tea bag has a side surface thereof on which is printed a message. The message is printed with materials that are substantially indistinguishable with the naked eye until a staining agent is activated which selectively stains the package surface but not the indicia thereon to produce...     
4149738 Tamper-proof page assembly Apr-17-1979
A tamper-proof page assembly utilizes a ribbon to string the assembly together by passing the ribbon through holes in the pages of the assembly. The ends of the ribbon are sealed to a cover page thereof with a thermosetting plastic slug. Removal of the slug leaves tell-tale marks on, or destroys the...     
4190268 Means for recording patient care Feb-26-1980
Means are provided enabling one to record accurately bedside or in-room nursing care verification developed specifically for acute or extended care facilities with the sole intent of upgrading patient care. Patient confidentiality is assured while the value of the care provided is immediately discernible.
4303307 Copy security system Dec-1-1981
A security system to prevent the unauthorized duplication of documents on standard electrostatic copiers. Paper substrates are coated with layers of carefully sized and spaced beads which break up the light emitted by a copier to a degree sufficient to preclude copying. In another embodiment, an original...     
4344644 Domestic inventory system Aug-17-1982
An inventory system including a display panel marked with a series of words for items to be inventoried, the panel markings having a certain characteristic appearance, such as being the same color, a plurality of checks or markers removably secured to the display member covering respective indicia or...     
4360548 Self-contained covert image Nov-23-1982
A hidden image, which can be made detectable by rubbing, is produced by applying to a substrate surface a first ink-like material in image configuration, then applying a second ink-like material to cover the image and an area surrounding the image. Each of the first and second ink-like materials contain...     
4463869 Tamper-evident spice can lid Aug-7-1984
A lid for use on dispensing containers which shows evidence of tampering either by opening of covers on the lid or by complete removal of the lid from the container, the lid having recesses in the top portion thereof wherein dispensing apertures are formed and covers for the recesses, one cover having...     
4480177 Currency identification method Oct-30-1984
A method of treating paper money and the like for the purpose of identification by applying to one of the surfaces of the paper money a first treating material overcoating the first treating material with a layer of transparent material to prevent the first treating material from being removed from or...     
4579370 Multi-tone cancellation phrase and background Apr-1-1986
A protected document has a cancellation phrase, normally invisible to the human eye, which will appear if the document is copied on a color copier. The protection of these documents is improved in the following protected document. The document is made up of a substrate, first and second cancellation...     
4588212 Document of value May-13-1986
The document of value is provided with a safety design extending on one portion or the whole of its surface. The entire surface of the safety design consists of juxtaposed groups of segments of raised parallel lines of two different heights forming high reliefs and low reliefs portions. The segments...     
4620727 Credit card Nov-4-1986
A credit card (1) with a storage medium such as, for example, a magnetic strip (4) is provided. The credit card (1) is made multi-part and consists of a card body (2) and a strip (3) which can be applied thereto. The strip (3) can be replaced, as required, by new strips, making it possible to use the...     
4626459 Mounting structure for security strip Dec-2-1986
A mounting structure for a flat, narrow, metallic strip for mounting the strip on a sheet of paper which includes a piece of paper to which the metallic strip is adhered by an adhesive carried on one surface of the adhesive. The piece of paper is dimensioned to provide a border with adhesive that extends...     
4681348 Financial document protection Jul-21-1987
A document protected against alteration comprises a sheet of paper having, on its face, an area in which numerals representing a sum of money to be paid on the document are printed. The area has a left end and a right end, and the entire length of the area, from the left end to the right end, is filled...     
4720408 Destructible carbon paper Jan-19-1988
Carbon paper duplicating sheets, such as those used in credit-card transaction forms, are made easily destroyable after authorized use without hand-soiling by incorporating, into the tissue paper base of the carbon paper sheets, filament strands arranged in repetitively alternating angular relationship...     
4741558 Transactions slips pack May-3-1988
A sales and credit transaction slip pack with duplicating paper between credit slips is provided. A jagged line of perforations is cut into the duplicating paper at a prescribed position. This position can be such as to obscure an account number and the signature or any other desired combination. When...     
4775154 Promotional game Oct-4-1988
A promotional game particularly adapted for use in connection with packaged food products, the game including a plurality of specially constructed game cards. Each game card consists of a transparent film laminate on which is imprinted a set of game indicia, which will vary from card to card. The card...     
4816824 Merchandise verification and information system Mar-28-1989
A system is disclosed for individually tracing units of merchandise with authentication devices or tags as such tags (with merchandise) move through channels of commerce. The total system incorporates a non-counterfeitable authenticator or verification tag which bears a machine-readable identification...     
4837584 Security time clock system Jun-6-1989
System for requiring the contemporaneous application of time clock data and personal data to a time card to prevent or signal the fraudulent application of either type of data at a time which is substantially different from the other type of data, i.e., by up to about 15 minutes. The present system includes...     
4856857 Transparent reflection-type Aug-15-1989
A transparent-type hologram comprising a transparent hologram-forming layer and a holographic effect-enhancing layer comprising a thin transparent film, the holographic effect-enhancing layer being laminated on the hologram-forming portion of the transparent hologram-forming layer. The holographic effect-enhancing...     
4869946 Tamperproof security card Sep-26-1989
There is disclosed a unique tamperproof security card comprised of a transparent upper layer having narrow parallel lenses on the outer surface, and an image containing substrate, said two layers forming a lenticular system by which images on the substrate are selectively visible depending upon the angle...     
4891666 Copy indicator for a document Jan-2-1990
A printed background pattern for a document is described, wherein the pattern masks a copy indicator which is revealed upon making a copy of the pattern using a digital optical scanning means. The background pattern comprises an area of microprinting with a type size having a line resolution of about...     
4915415 Internally disposed welded binding Apr-10-1990
A passbook is provided that substantially prevents alteration or counterfeiting. The passbook is formed from a plurality of sheets of flexible material that are bound to one another at selected locations thereon by welding to define a substantially integral stub. The free edges of the welded pages are...     
4932681 Recording medium Jun-12-1990
A recording medium having two outer sheets (1, 3) forming a pocket, and an extractable intermediate sheet (5) lying in between, the latter producing a recording contrast in a recording action and being removed from the pocket after noting, there further being provided between the outer sheets a sticky...     
4941688 Periodic event recorder Jul-17-1990
A period event recorder comprising a label, indicia on the label corresponding to a desired time or frequency interval; a porous substrate attached to the underside of the label; means for attaching the porous substrate to an object associated with, related to, or nearby the site for performance of a...     
4968063 Transparent tamper-indicating document overlay Nov-6-1990
A transparent overlay that can protect a document from tampering has a transparent cover sheet, a layer of hot-melt adhesive over one surface of the transparent cover sheet, and an image formed on the exposed face of said hot-melt adhesive layer. The transparent cover sheet can be a simple thermoplastic...     
4995315 Money order imprinter Feb-26-1991
An imprinting apparatus for imprinting checks, money orders and like negotiable instruments includes adjustable type segment members having type characters thereon for printing the dollar and cents amount of the money order in conventional arabic characters and in characters which are readable by an...     
5015318 Method of making tamper-evident structures May-14-1991
The method involves forming a laminate capable of generating a substantially non-dichroic color by a light interference and absorption phenomenon by depositing a layer of a metal of medium light reflectivity by a vapor deposition technique on a suitable substrate, anodizing a surface of the metal in...     
5018767 Counterfeit protected document May-28-1991
A method and product, resulting from application of the method, for making images on a document that will not be replicated properly by electro-optical scanning and copying devices. Documents that cannot be replicated by known copying machines or other replicating devices are produced according to the...     
5083815 Heat actuated game Jan-28-1992
A lottery type game includes a plurality of indicia which can be exposed to reveal a winning or losing line and has a central indicium covered by scratchable ink and two other indicia covered by an ink which is normally opaque at room temperature but which becomes transparent on heating. The game can...     
5139572 Reusable hidden indicia printed sheet Aug-18-1992
A print of this invention has a color-forming area and a discoloring area. The color-forming area is printed by an ink containing a first color-changing agent which changes from substantially invisible colorlessness to visibleness by applying a color former. The discoloring area is printed by an ink...     
5153042 Tamper-indicating labelstock Oct-6-1992
A labelstock, which after being carefully removed cannot be re-applied without leaving an unmistakable warning of tampering. If comprises a transparent facestock, a release coating forming an indicia attached to the facestock, a primer covering the facestock and release coating, a frangible metal layer...     
5265916 Secure event tickets Nov-30-1993
Tickets for concerts, conventions, sports, and like events, have a security feature to assist in preventing counterfeiting. A stretchable security thread is disposed in a piece of paper stock extending so that it intersects, with portions lying on either side of, a line of separation in the piece of...     
5289547 Authenticating method Feb-22-1994
An improved method for authenticating articles is described. A mixture of at least two photochromic compounds that have different absorption maxima in the activated state and also preferably other different properties are incorporated into a carrier composition, e.g., ink, paint, fiber or polymer used...     
5324567 Ink composition and components thereof Jun-28-1994
Raman-active compounds such as polydiacetylenes are provided in the form of particles whose maximum dimension is 40 .mu.m. They can be formulated into inks, for the purpose of printing on security documents which are thus readily capable of authentication.
5326964 Separable multi-account safety credit card Jul-5-1994
A separable safety credit card which contains multiple account numbers and is mechanically detachable into two component parts whereby that part upon which is embossed the credit account numbers may be separately carried from the individual identification part thereof for purposes of safety and security...     
5335113 Diffraction grating Aug-2-1994
A diffraction grating of reflective or transmissive lines is formed by a regular matrix of pixels each containing a respective curvilinear portion of one or more of said lines. When the pixels are illuminated, each generates a two-dimensional optical catastrophe image diffraction pattern whereby the...     
5354097 Security of objects or documents Oct-11-1994
An object or document, such as a credit card, passport, or bank note, is secured against forgery or fraud by the provision of a unique pattern of overlying individual fibers which are embedded in a sheet of transparent base material, and such that the fibers form geometrical configurations which are...     
5368334 Variable data clear mark imaging Nov-29-1994
A security document is produced from a paper substrate having invisible hydrophobic toner blended into the paper. The clear toner is produced by milling and classifying a polyester resin, mixing it with silica flowing agent, and then electrostatically imaging the toner onto the paper substrate, as a...     
5399021 Credit card holder Mar-21-1995
A tamper-proof and/or tamper-evident bag or envelope is provided for transporting of credit cards or debit cards which have raised identifying characters. The bag or envelope includes a tamper strip, a front panel, and a back panel drawing together at the lateral edges of the panels. In use the card...     
5429392 Composite microdot and method Jul-4-1995
A composite microdot fabricated form a microdot and at least one composite layer. The composite layer is selected to impart to the composite microdot at least one of the characteristics of enhanced visibility, camouflage, buoyancy control, magnetic attraction, and controlled biodegradation. A second...     
5436974 Method of encoding confidentiality markings Jul-25-1995
The invention disclosed here is a method of encoding serial numbers indicating "confidentiality" or "proprietary information" on printed documents. A group of marks in the form of small-sized dots or equivalent markings are repetitively printed across the face of the document. The placement and location...     
5465301 Security threads Nov-7-1995
A security thread (11) for use in security articles (10), includes a substrate having a coating on one or both sides thereof, the coating containing a thermochromic material selected from pigments and dyestuffs which changes from coloured to colourless when the temperature of the pigment or dyestuff...     
5468022 Sample tube identification flag Nov-21-1995
The invention relates to an identification flag for a sample tube. The flag includes a longitudinally extending planar element, and tube connectors extending laterally from the planar element. The tube connectors are engageable with opposite portions of the tube to secure the planar element to the tube...     
5471533 Record with encoded data Nov-28-1995
A record contains a graphic image and an information area which are interrelated to discourage misuse of the record. The information area can overlay the graphic image and include information encoded in a error-correctable, machine-readable format which allows recovery of the information despite distortion...     
5494317 Lottery ticket Feb-27-1996
A lottery ticket is described having a front sheet which defines a plurality of windows and includes a plurality of bars separating said windows from one another and a plurality of closure panels closing the windows, a rear sheet and an intermediate layer for selectively bonding the front sheet and the...     
5543010 Document protecting apparatus Aug-6-1996
A document laminate includes laminating sheets with adhesive on facing sides to laminate a document between the sheets, and shielding sheets covering the document and received within the laminating sheets. When the adhesive is heat activated, the shielding sheets are selected to be not degraded by the...     
5551729 Tamper indication device Sep-3-1996
A tamper indicating, multi-layer strip has an upper layer of translucent or transparent material, a tamper pattern-forming layer beneath the upper layer, and a lower, adhesive layer for securing the strip to an item to be protected. A layer of imprintable material which is of area less than that of the...     
5569522 Anticopying film Oct-29-1996
An anticopying film (2) for covering documents (1) appears opaque in vertical plan view (5) as a result of total reflection for protection against copying and appears transparent in the oblique viewing direction (6), the film having an irregular sawtooth structure (3). This makes it virtually impossible...     
5622106 Self-inking embossing system Apr-22-1997
An embossing system for the simultaneous positive and negative (i.e. in and out embossing of an indicia (10) in sheet material (20) has a top plate (40) and a bottom plate (50) each with respective positive and negative embossing plate portions (43/53, 44/54) which are aligned and complementary, so arranged...     
5651615 Security label Jul-29-1997
A security device for identifying products includes a printing medium in which luminescent agents are dispersed and having at least one opaque part disposed on at least one luminescent part of the medium. The opaque part is the same color as the luminescent part and has at least one contour of a different...     
5678863 High value documents Oct-21-1997
A means of identification or document of value which includes a paper or polymer region, in particular, bank notes, passports, identification cards or any other document of sufficient value to make it liable to be copied or counterfeited, includes a watermark in the region and a liquid crystal material...     
5683114 Residential placard system Nov-4-1997
A residential placard system comprised of adhesive letters and numbers with a symbol color-coded backing adapted to be assembled and provide a customized visual information window display alert for emergency personnel, and particularly firemen, in quickly and efficiently determining and identifying the...     
5700036 Identification protective cover Dec-23-1997
A protective cover comprising of a flexible polymeric sheet bonded continuously along three sides to form a pocket for slidably inserting an insert therethrough. An opaque coating, preferably black in color, is applied at specific desired location on the surface of either the front, rear, or on both...     
5700550 Transparent hologram seal Dec-23-1997
A hologram forming layer, transparent evaporated layer, colored layer, adhesion anchor layer, and adhesive layer are sequentially laminated on the under surface of a base member. The laminated body is used as a seal by the presence of the adhesive layer. It is preferable for the base member to have adequate...     
5714213 Securtiy element Feb-3-1998
A security element for the authentication of a substrate has a pattern comprising optical diffraction elements which are embossed in a carrier material of plastic material and unembossed neutral areas. On the embossing side of the carrier material a reflecting layer covers only surfaces with relief structures...     
5720801 Water resistant security ink composition Feb-24-1998
A leach resistant ink composition including a diphenyl guanidine compound, an acid, and a resin. The ink composition may further include a glycol and an alcohol and can be printed on paper, such as, for example, in the word "VOID". If bleach is used to attempt to alter the document, the initially colorless...     
5725254 Facsimile document carrier Mar-10-1998
The instant invention is a carrier of documents for use with facsimile machines. The carrier is particularly effective for odd sized documents and can be reused indefinitely for holding documents as they pass through the scanner of a facsimile machine. The carrier is divided into two portions with an...     
5728449 Anti-copy film layer for documents Mar-17-1998
An anti-copy film or layer for originals or documents comprises according to the invention transparent film material having a multiplicity of at least partially opaque and possibly reflective areas arranged at distances from one another which are arranged as screens on the film surfaces essentially in...     
5732979 Security label system Mar-31-1998
A security label system includes a security label, a protective label, and a means for applying said labels to an item using an applicator workstation. Preferably, said security label system inexpensively and readily identifies and protects compact disc multimedia from theft or damage occurring during...     
5735550 Secure credit card Apr-7-1998
A secure transaction card (C) accepted for transactions by a customer has usable customer identifying information (I). The card (C) has a card body (16) with an upper surface (18). The upper surface (18) has an indicator area (20) indicating that the secure transaction card (C) should not be accepted...     
5762378 Tamper resistant validation marks Jun-9-1998
The present invention includes a pattern of fine slits formed in the material of document where sensitive information is intended to be printed or imprinted, wherein the slit pattern modifies the tensile strength of the substrate. In addition, the slit pattern modifies the toner or ink permeability of...     
5795643 Anticopying film Aug-18-1998
An anticopying film or layer consists of a film or of a layer of transparent material having a large number of completely or partially nontransparent regions which are arranged distances apart and whose planes are arranged in about the same predetermined position relative to the surfaces of the film...     
5823576 Copy-resistant document Oct-20-1998
A document that resists copying by ordinary color copiers and color scanners. An area that is printed with color dots using a gradient print screen that exceeds resolutions available on commonly available color copiers and color scanners. The area may therefore comprise lighter regions (having fewer...     
5843564 Copy restrictive documents Dec-1-1998
A media for restricting the copying of a document utilizing one or more microdots that are embedded in said document for providing a non-visual, but machine detectable mark or marks. The detected means for detecting the presence of one or more microdots in said document inhibits a copy machine from copying...     
5851032 Composite image arrangement Dec-22-1998
This invention relates to a composite image arrangement, comprising a pattern and a further pattern, substantially parallel to the first pattern, each comprising a plurality of visually contrasting regions, the patterns being in fixed positions relative one to the other on either side of a light transmissive...     
5853197 Security document Dec-29-1998
A security document is provided comprising a substrate having a top surface for carrying indicia. The top surface has a plurality of areas. Each of the areas contains background printed matter on the top surface. The background printed matter made up of a pattern of background elements. Each of the areas...     
5856266 Copy restrictive documents Jan-5-1999
A media for restricting the copying of a document utilizing one or more microdots that are embedded in said document for providing a non-visual, but machine detectable mark or marks. The detected means for detecting the presence of one or more microdots in said document inhibits a copy machine from copying...     
5863073 Refundable travellers cheques Jan-26-1999
A secure manner for issuing travellers cheques and other instruments is provided which overcomes many of the shortcomings associated with known devices. In particular, the present invention provides a device which permits an issuer of prepaid instruments to securely provide credit, replacement, or reimbursement...     
5863075 Integrated image scrambling and descrambling Jan-26-1999
A method for printing a scrambled image and decoding mechanism in registration one on top of the other. The decoding mechanism is not immediately apparent upon inspection. A person decodes the scrambled image by exposing the decoding mechanism.
5865471 Photo-erasable data processing forms Feb-2-1999
A data processing form for use with photo-sensing apparatus that detect the presence of indicia at indicia-receiving locations on the form. The form is composed of a sheet of carrier material and plurality of indicia-receiving locations. The indicia-receiving locations are defined by a mutable colored...     
5893587 Tamper indicating label Apr-13-1999
A tamper indicating label including an upper sheet having an adhesive lower surface detachably attached to a backing sheet and divided into separable sections by a weakened line such that indicia such as the user's signature can be inscribed on the face of the sheet and across the weakened line such...     
5895075 Security label Apr-20-1999
A security label has a bar code on the outer surface of an outer layer which is permanently bonded to an inner layer. A pull tab defined in the material of the outer and second layers is joined to a detachable portion extending across the length of the label whereby removal of the pull tab will tear...     
5919730 Copy restrictive documents Jul-6-1999
A media for restricting the copying of a document utilizing one or more microdots that are embedded in said document for providing a non-visual, but machine detectable mark or marks. The detected means for detecting the presence of one or more microdots in said document inhibits a copy machine from copying...     
5953170 Label for container Sep-14-1999
A label for a container which is at least partially translucent, an image bearing portion located on part of the label with the image bearing portion including an image which is in a visually incoherent form, and a viewing member located on another part of the label for rendering the image in a visually...     
5984366 Unalterable self-verifying articles Nov-16-1999
Disclosed are methods, systems and articles of manufacture for creating and authenticating self-verifying articles. Self-verifying articles include, for example, commercial instruments (i.e., notes, drafts, checks, bearer paper, etc.), transaction cards (i.e., ATM cards, calling cards, credit cards,...     
6019872 Authenticatable bleached chemical paper products Feb-1-2000
An authenticable paper product is prepared from a bleached chemical papermaking furnish containing a minor but detectable amount of lignin containing fibers selected from the group consisting of mechanical, thermomechanical, chemi-thermomechanical and bleached-chemi-thermomechanical.
6033762 Self-adhesive resealable tamper-evident tape Mar-7-2000
A self-wound, self-adhesive, resealable tamper-evident tape is provided. The tape is used to seal any container requiring a self-adhesive closure, such as bags or pouches, and provides clear visual evidence if the self-adhesive seal is peeled apart. The tape comprises a backing sheet, the upper surface...     
6037028 Prelaminate Mar-14-2000
A prelaminate has a plurality of layers intended for collective insertion in a mutually fixed spatial relation into the pinch between optionally heated, co-acting pressure rollers. The prelaminate includes a carrier layer, a first glue layer arranged thereon and adhered thereto, a cover foil, for instance...     
6045881 Copy restrictive documents Apr-4-2000
A media for restricting the copying of a document utilizing one or more microdots that are embedded in said document for providing a non-visual, but machine detectable mark or marks. The detected means for detecting the presence of one or more microdots in said document inhibits a copy machine from copying...     
6050607 Security image element tiling scheme Apr-18-2000
A security document is prepared by designating specialized tiling elements to be printed in selected image element cells across the face of the document. In accordance with one embodiment of the present invention, a method of preparing a security document is provided comprising the steps of: (i) designating...     
6062604 Self-verifying security documents May-16-2000
A self-verifying security document, such as a banknote (1) comprises a flexible sheet formed from a plastics substrate (2) bearing indicia (3). The sheet has a window (5) of transparent plastics material which includes self-verification means (11) for verifying a security device (4) provided at a laterally...     
6082776 Storing personal medical information Jul-4-2000
A system and method for data compression of structured medical history information using multiple, updatable, static dictionaries in conjunction with an advanced probability-based model. The system is not a free text, word or phrase compressor as is presented in generalized or universal data compression...     
6089614 Security device Jul-18-2000
A security device comprises a substrate (1) having a viewing region (3) which is provided on one side with first indicia (7) and on the other side with second indicia (9) overlying the first indicia. The substrate carries an obscuring material (10) aligned with the second indicia (9) so as to prevent...     
6103353 Copy restrictive documents Aug-15-2000
A media for restricting the copying of a document utilizing one or more microdots that are embedded in said document for providing a non-visual, but machine detectable mark or marks. The detected means for detecting the presence of one or more microdots in said document inhibits a copy machine from copying...     
6139066 Optically decodable security document Oct-31-2000
An optically decodable security document is provided comprising a security image area defined on a face of the document. The security image area is divided into a plurality of image element cells defining an array of image element cells across the security image area. The image element cells define first...     
6146729 Film seal Nov-14-2000
A new film seal for providing a seal which allows a user to easily ascertain whether a roll of film has been exposed or is a new roll of film. The inventive device includes an elongate strip with an adhesive provided on one of the surfaces of the strip. The adhesive is adapted for adhesively coupling...     
6149203 Tamper-evident closure seal Nov-21-2000
A tamper-evident closure seal is imprinted on its top surface to form a pattern of adjoining matte and high-gloss areas. The bottom surface of the seal is coated with a permanent adhesive. The seal may be used to bridge a gap between two perpendicular surfaces of a carton. If unauthorized entry to the...     
6155605 Document of value Dec-5-2000
A document of value such as a banknote comprises a substrate having a security feature in or on one region of the substrate. The security feature has at least one machine authenticatable high security entity (HSE) and at least one further machine authenticatable entity comprising a low security entity...     
6209922 Copy protected security print Apr-3-2001
A security print contains a background pattern formed for example of dots or lines. An object, for example the text "BEWARE OF FORGERY", is worked into this regular background pattern for copy protection. The text is worked in by the individual lines of the background pattern being split at the places...     
6209923 Security document and authentication scheme Apr-3-2001
A security document is provided including a unique combination of covert triggers, overt triggers, and overt secure document indicators arranged to enhance the security of the document at issue. In accordance with one embodiment of the present invention, a security document is provided including a security...     
6254007 Security image element tiling scheme Jul-3-2001
A security document is prepared by designating specialized tiling elements to be printed in selected image element cells across the face of the document. In accordance with one embodiment of the present invention, a method of preparing a security document is provided comprising the steps of: (i) designating...     
6273473 Self-verifying security documents Aug-14-2001
A self-verifying security document, such as a banknote (1) comprises a flexible sheet formed from a plastics substrate (2) bearing indicia (3). The sheet bas a window (5) of transparent plastics material which includes self-verification means (11) for verifying a security device (4) provided at a laterally...     
6284396 Transfer band Sep-4-2001
The invention relates to a multilayer foil, in particular a transfer foil. The transfer foil consists of a carrier. foil, a one- or multilayer transfer layer containing an optically variable structure, and an intermediate layer located between the carrier foil and the transfer layer, the intermediate...     
6296281 Latent image structure Oct-2-2001
A latent image structure of a highly secure nature in which two latent image are superimposed. Each of the superimposed latent images is viewable from a different line of sight. Relief elements define, for each latent image, portions of respective linear relief structures providing an image and a background...     
6303202 Secure sticker and integrated label/form Oct-16-2001
A secure sticker is provided comprising a waterproof base portion including a paper ply, static printed matter, and a resin, wherein the paper ply and the static printed matter are sealed within the resin, and wherein the resin is substantially transparent to light in the visible spectrum. In accordance...     
6303211 Tamper-evident electric paper Oct-16-2001
Tamper-evident electric paper is made of two sheets of electric paper bonded together, the bottom sheet of which includes a pattern. Any attempt to erase a writing on the top sheet of electric paper results in the pattern on the bottom sheet of electric paper being erased. Therefore any tampering by...     
6316082 Laminate structure Nov-13-2001
The present invention relates to the field of laminated materials and, in particular, to laminates (1) for stamping foils and security threads (1). In one aspect there is provided a laminate (1) for a stamping foil comprising a carrier layer, a translucent or transparent coloured first lacquer layer...     
6325421 Authenticity attribute Dec-4-2001
The authenticity attribute for an object to be protected is formed by an elongate profile which produces characteristic oscillations upon scanning with the edge or the tip of a scanning object.
6355140 Method of manufacturing anti-falsification paper Mar-12-2002
A method of manufacturing a thread-inserted window paper produces paper in which a thread is exposed to windows which are intermittently formed, and have clear contours, and in which thread is exposed surely at the window portions to make the thread clearly recognizable visually. The method is capable...     
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