US PATENT SUBCLASS 8 / 691
.~.~.~ Thiazoles (including hydrogenated)

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}
690  DF  .~.~ Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen {2}
691.~.~.~ Thiazoles (including hydrogenated)

DEFINITION

Classification: 8/691

Thiazoles (included hydrogenated):

(under subclass 690) Subject matter wherein at least one of the atoms in the ring besides nitrogen and carbon is sulfur, including hydrogenated compounds.