US PATENT SUBCLASS 8 / 94.17
.~.~ Alkaline material removal

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}
94.15  DF  .~ Treatment of untanned skins or hides {2}
94.17.~.~ Alkaline material removal

DEFINITION

Classification: 8/94.17

(under subclass 94.15) Processes for the treatment of hides and skins, for the purpose of removing or neutralizing the alkaline material therefrom.

(1) Note. Most of the patents in this subclass are directed to the removal or neutralization of lime or other alkaline material used in the depilating process.

SEE OR SEARCH CLASS

252, Compositions,

193, for alkali or base bindant containing compositions.

435, Chemistry: Molecular Biology and Microbiology,

265, for "bating" or other treatments of hides for removal of lime or other alkaline material by processes involving fermentation and the composition used in such processes.