US PATENT SUBCLASS 8 / 138
.~ Degumming or desizing


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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

137  DF  CLEANING OR LAUNDERING {6}
138.~ Degumming or desizing


DEFINITION

Classification: 8/138

(under subclass 137) Inventions for the removal of natural sericin or other naturally occurring gum or wax, or an artificially applied size or gum from textile fibers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

930, for degumming in connection with dyeing.

SEE OR SEARCH CLASS

19, Textiles: Fiber Preparation, for the mechanical removal of silk from cocoons.

162, Paper Making and Fiber Liberation, particularly 2, for the freeing of silk from their cocoons.

435, Chemistry: Molecular Biology and Microbiology,

263, for degumming or desizing by means of enzymes.