US PATENT SUBCLASS 8 / 463
.~.~ Acid (including direct) dye, e.g., sulfonated, sulfamated, 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}
463.~.~ Acid (including direct) dye, e.g., sulfonated, sulfamated, etc.

DEFINITION

Classification: 8/463

Acid (including direct) dye, e.g., sulfonated, sulfamated, etc.:

(under subclass 457) Processes wherein an acid or direct dye is discharded.

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