US PATENT SUBCLASS 8 / 94.31
.~.~ With cellulose liberation liquor

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

94.1 R  DF  TREATMENT OF HIDES, SKINS, FEATHERS AND ANIMAL TISSUES {9}
94.19 R  DF  .~ Tanning {8}
94.31.~.~ With cellulose liberation liquor

DEFINITION

Classification: 8/94.31

(under subclass 94.19) Processes of tanning in which the tanning agents contain a waste liquor from a process of liberating cellulose from its natural source.

(1) Note. This subclass includes tanning processes employing a liquor, or solution of the residue from the sulfate, sulfite, or soda process of liberating cellulose.

SEE OR SEARCH CLASS

106, Compositions: Coating or Plastic,

123.11+, and the notes thereto, for other compositions containing cellulose liberation liquors.

530, Chemistry: Natural Resins or Derivatives; Peptides or Proteins; Lignins or Reaction Products Thereof, 500+, for such residues and reaction products, per se.