US PATENT SUBCLASS 8 / 637.1
.~ Pigments used as dyes (imbibition of a pigment)

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}
637.1.~ Pigments used as dyes (imbibition of a pigment)

DEFINITION

Classification: 8/637.1

Pigments used as dyes (imbibition of a pigment):

(under subclass 636) Subject matter wherein a pigment is used as a dye.

(1) Note. This subclass takes coloring with a pigment wherein the coloring is by imbibition, i.e., absorption of the pigment by the substrate.