US PATENT SUBCLASS 525 / 71
.~.~.~.~ Contains two or more graft or graft-type copolymers or a graft or a graft type copolymer and at least one block or block-type copolymer

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}
55  DF  .~.~ At least one solid polymer derived from ethylenic reactants only {25}
70  DF  .~.~.~ Mixing of solid graft or graft-type copolymer derived from ethylenic reactants only with other solid polymer derived from ethylenic reactants only; or treating said mixture with chemical treating agent; or processes of forming or reacting; or the resultant product of any of the above operations {11}
71.~.~.~.~ Contains two or more graft or graft-type copolymers or a graft or a graft type copolymer and at least one block or block-type copolymer

DEFINITION

Classification: 525/71

Contains two or more graft or graft-type copolymers or a graft or a graft-type copolymer and at least one block or block-type copolymer:

(under subclass 70) Subject matter wherein the mixture contains two or more graft or graft-type copolymers (or mixture thereof), a graft or graft-type copolymer, and at least one block or block-type copolymer.

SEE OR SEARCH THIS CLASS, SUBCLASS:

88, for the definition of a "block or block-type copolymer".