US PATENT SUBCLASS 8 / 646
.~ Dye extracted from natural product

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

636  DF  DYE OR POTENTIAL DYE COMPOSITION, ADDITIVE, TREATMENT, PROCESS, PRODUCT, OR ANCILLARY DYE OPERATION {12}
646.~ Dye extracted from natural product

DEFINITION

Classification: 8/646

Dye extracted from natural product:

(under subclass 636) Subject matter containing a natural dye.

(1) Note. Natural dyes are extracts of plants or animal obtained with no or very little chemical processing.