US PATENT SUBCLASS 8 / 455
.~.~ 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}
446  DF  .~ Resist or reserve {10}
455.~.~ Acid (including direct) dye, e.g., sulfonated, sulfamated, etc.

DEFINITION

Classification: 8/455

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

(under subclass 446) Processes wherein an acid or direct dye is resisted.

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