US PATENT SUBCLASS 435 / 278
.~.~.~.~ Producing paper pulp

Current as of: June, 1999
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435 /   HD   CHEMISTRY: MOLECULAR BIOLOGY AND MICROBIOLOGY

262  DF  PROCESS OF UTILIZING AN ENZYME OR MICRO-ORGANISM TO DESTROY HAZARDOUS OR TOXIC WASTE, LIBERATE, SEPARATE, OR PURIFY A PREEXISTING COMPOUND OR COMPOSITION THEREFORE; CLEANING OBJECTS OR TEXTILES {8}
267  DF  .~ Treating animal or plant material or micro-organism {6}
274  DF  .~.~ Carbohydrate material recovered or purified {3}
277  DF  .~.~.~ Cellulose (e.g., plant fibers, etc.) {2}
278.~.~.~.~ Producing paper pulp

DEFINITION

Classification: 435/278

Producing paper pulp:

(under subclass 277) Processes wherein the material which is liberated is paper pulp.

SEE OR SEARCH CLASS

162, Paper Making and Fiber Liberation, for processes of making a paper pulp by chemical action.