US PATENT SUBCLASS 8 / 657
.~ Basic dye, including diphenylmethane, triphenylmethane, xanthene, fluorene, methine, acridine, oxazine, phenazine, flavylium, naphthoperinone, quinophthalone, etc., group-containing

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}
657.~ Basic dye, including diphenylmethane, triphenylmethane, xanthene, fluorene, methine, acridine, oxazine, phenazine, flavylium, naphthoperinone, quinophthalone, etc., group-containing {2}
658  DF  .~.~> Acid dye form, e.g., with sulfonic acid group, etc.
659  DF  .~.~> Methine group

DEFINITION

Classification: 8/657

Basic dye, including diphenylmethane, triphenylmethane, xanthene, fluorene, methine, acridine, oxazine, phenazine, flavylium, napthoperinone, quinophthalone, etc., group-containing:

(under subclass 636) Processes wherein a basic or cationic dye is used.

(1) Note. See the Glossary for a definition of basic dye.