US PATENT SUBCLASS 435 / 277
.~.~.~ Cellulose (e.g., plant fibers, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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.~.~.~ Cellulose (e.g., plant fibers, etc.) {2}
278  DF  .~.~.~.~> Producing paper pulp
279  DF  .~.~.~.~> Hemp or flax treating

DEFINITION

Classification: 435/277

Cellulose (e.g., plant fibers, etc.):

(under subclass 274) Processes wherein the preexisting material is a polysaccharide which has predominately beta-1, 4 linkages between the glucose units.

SEE OR SEARCH CLASS

8, Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers, for chemical modification and fluid treatment of fibers and textiles, not otherwise provided for.

162, Paper Making and Fiber Liberation, for processes of liberation, recovery or purification of cellulose or animal fibers as individual fibers or fibrous pulp by the use of a reagent which exerts some solvent or chemical action upon fibrous material and the reagent compositions employed in such processes.

260, Chemistry of Carbon Compounds, particularly

212+, for processes of chemically modifying cellulose in which its fibrous nature is destroyed, e.g., in the production of cellulose esters.