Synthetic resins or natural rubbers -- part of the class 520 series

SECTION I - CLASS DEFINITION

This Class Definition covers the subject matter of Class 523 and of Class 524. Class 524 is a continuation of the subject matter of Class 523. Class 523, subclass 1 serves as the parent subclass to all other Class 523 subclasses and to all Class 524 subclasses.

The terms "desired" and "intentional" have been used interchangeably throughout the schedule and definitions.

A. GENERAL SUMMARY OF SUBJECT MATTER WITHIN THIS CLASS

In order for a patent claim to be proper for this class, there must be a desire or intent to produce a composition of a solid polymer or SICP and a nonreactant material (NRM); this includes the treatment of a composition to produce a desired or intentional composition. The NRM may be added to the solid polymer, to a specified intermediate condensation product (SICP), to specified polymer-forming ingredients (SPFI), or to materials specifically denoted as forming solid polymers.

A desired composition is formed when the nonreactive material is desired to be present or operative in the ultimate system under consideration. An ingredient present only as an innocuous impurity, residue, or by-product signifies a composition but not a desired composition.