US PATENT SUBCLASS 523 / 328
.~.~.~ Removal of material by treatment with hot water or steam, e.g., steam stripping, 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}
326  DF  .~.~ Adding steam or hot water (T at least 60 degrees C, i.e., 140 degrees F) {1}
328.~.~.~ Removal of material by treatment with hot water or steam, e.g., steam stripping, etc.

DEFINITION

Classification: 523/328

Removal of material by treatment with hot water or steam, e.g., steam stripping, etc.:

(under subclass 326) Process wherein steam or hot water is employed to remove material from the composition, e.g., steam distillation, hot water extraction, etc., or steam stripping, etc.

SEE OR SEARCH CLASS

528, Synthetic Resins or Natural Rubbers,

500, for a process of steam stripping or steam distilling a solid polymer or resinifiable intermediate condensation product.