US PATENT SUBCLASS 8 / 645
.~ Inorganic dye (mineral dye)

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}
645.~ Inorganic dye (mineral dye)

DEFINITION

Classification: 8/645

Inorganic dye (mineral dye):

(under subclass 636) Subject matter wherein inorganic dye materials only are employed, which may coact to form an insoluble compound in the substrate.