US PATENT SUBCLASS 8 / 461
.~.~ Vat dye or sulfur dye, e.g., quinonic or indigoid reducible, or sulfur organic compound reaction product dye, etc.

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

445  DF  PROCESS OF PRINTING PERMANENTLY ON SUBSTRATE, OTHER THAN NOMINAL PRINTING, USING PRINT PASTE CONTAINING DISCHARGE MATERIAL, RESIST MATERIAL, OR DYE MATERIAL; OR STENCIL DYEING {4}
457  DF  .~ Discharge utilized {7}
461.~.~ Vat dye or sulfur dye, e.g., quinonic or indigoid reducible, or sulfur organic compound reaction product dye, etc.

DEFINITION

Classification: 8/461

Vat dye or sulfur dye, e.g., quinonic or indigold reducible, or sulfur-organic compound reaction product dye, etc.:

(under subclass 457) Process wherein a vat or sulfur dye is discharged.

(1) Note. See this Glossary for a definition of the term vat dye.

SEE OR SEARCH THIS CLASS, SUBCLASS:

650, for other vat and sulfur dye compositions.