US PATENT SUBCLASS 523 / 157
.~.~.~.~ Containing at least two organic materials, e.g., binder plus other organic material, etc.

Current as of: June, 1999
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523 /   HD   SYNTHETIC RESINS OR NATURAL RUBBERS -- PART OF THE CLASS 520 SERIES

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {1}
1  DF  .~ PROCESSES OF PREPARING A DESIRED OR INTENTIONAL COMPOSITION OF AT LEAST ONE NONREACTANT MATERIAL AND AT LEAST ONE SOLID POLYMER OR SPECIFIED INTERMEDIATE CONDENSATION PRODUCT, OR PRODUCT THEREOF {71}
149  DF  .~.~ Friction element composition or process of preparing {2}
152  DF  .~.~.~ For wheeled vehicle {4}
157.~.~.~.~ Containing at least two organic materials, e.g., binder plus other organic material, etc. {1}
158  DF  .~.~.~.~.~> Composition contains a phenolic, amine, or ketone condensate with aldehyde plus a polymer derived from ethylenic monomers only

DEFINITION

Classification: 523/157

Containing at least two organic materials, e.g., binder plus other organic material etc.:

(under subclass 152) Subject matter wherein the composition contains at least two organic materials.

(1) Note. The organic material may be either solid, liquid, or gas and may be in monomeric or polymeric form.

(2) Note. An example of a composition for this subclass would be two solid polymers plus asbestos or a friction element or a solid polymer, organic binder, and asbestos.

SEE OR SEARCH THIS CLASS, SUBCLASS:

152, for placement of patents in this subclass and its indents, the classification should be based upon the specification along with the claims. Thus, the specification and the claims should be read to determine if asbestos or an

organic or inorganic material is present or absent. A patent which does not claim asbestos but wherein the disclosure is limited to asbestos would be originally classified into an asbestos containing subclass.