US PATENT SUBCLASS 525 / 540
.~.~ Solid polymer derived from nitrogen-containing reactant

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

*  DD  SYNTHETIC RESINS (Class 520, Subclass 1) {4}
50  DF  .~ MIXING OF TWO OR MORE SOLID POLYMERS; MIXING OF SOLID POLYMER OR SICP WITH SICP OR SPFI; MIXING OF SICP WITH AN ETHYLENIC AGENT; MIXING OF SOLID POLYMER WITH A CHEMICAL TREATING OR ETHYLENIC AGENT; OR PROCESSES OF FORMING OR REACTING; OR THE RESULTANT PRODUCT OF ANY OF THE ABOVE OPERATIONS {32}
540.~.~ Solid polymer derived from nitrogen-containing reactant

DEFINITION

Classification: 525/540

Solid polymer derived from nitrogen-containing reactant:

(under subclass 50) Subject matter involves processes of mixing a solid polymer derived from a nitrogen-containing reactant with additional solid polymer, with specified polymer-forming ingredients, with chemical treating agent or with ethylenic agent; or products resulting from the above mixing processes.

CROSS-REFERENCE ART COLLECTIONS