US PATENT SUBCLASS 8 / 680
.~.~ Dye containing -(O=)S(=O)-O-, -O(O=)S(=O)-O- or phosphorus oxide group

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}
662  DF  .~ Azo, acridone, or quinone dye {15}
680.~.~ Dye containing -(O=)S(=O)-O-, -O(O=)S(=O)-O- or phosphorus oxide group {1}
681  DF  .~.~.~> Sulfonated azo {1}

DEFINITION

Classification: 8/680

Dye containing -(O=)S(=O)-O-, -O(O=)S(=O)-O- or phosphorous oxide group:

(under subclass 662) Subject matter wherein a dye contains a -SO3-, -SO4- or other phosphorus oxide group.

(1) Note. Included herein are sulfonated dyes and salts and esters thereof.