US PATENT SUBCLASS 8 / 432
.~.~.~ -S-S- bond disruption, e.g., use of thioglycolates, etc.

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

404  DF  DYEING INVOLVING ANIMAL-DERIVED NATURAL FIBER MATERIAL (OTHER THAN SOLELY WOOL OR SILK), E.G., LEATHER, FUR, HAIR, FEATHERS, ETC., COMPOSITION, PROCESS, OR PRODUCT {2}
405  DF  .~ Hair dyeing {7}
431  DF  .~.~ With fluid treatment, e.g., bleaching with dyeing, etc. {2}
432.~.~.~ -S-S- bond disruption, e.g., use of thioglycolates, etc.

DEFINITION

Classification: 8/432

-S-S- bond disruption, e.g., use of thioglycolates, etc.:

(under subclass 431) Subject matter involving disulfide bond disruption of hair.

(1) Note. Express recitation of a -S-S- bond disruption in a

hair dye bath will place the case in this subclass. Use of thioglycolates as dye assistants on fur or hair will be sufficient to place a document into this subclass.