US PATENT SUBCLASS 525 / 198
.~.~.~.~.~ With subsequent physical treatment

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}
191  DF  .~.~.~ Polymer mixture of two or more solid polymers derived from ethylenically unsaturated reactants only; or mixtures of said polymer mixture with a chemical treating agent; or products or processes of preparing any of the above mixtures {23}
197  DF  .~.~.~.~ Specified blending process {1}
198.~.~.~.~.~ With subsequent physical treatment

DEFINITION

Classification: 525/198

With subsequent physical treatment:

(under subclass 197) Subject matter wherein the blending process is accompanied by a subsequent physical treatment; e.g., masticating (crushing), prilling (pelletizing), evaporation of solvent, shearing, rolling, pressing, milling, granulating, etc.