US PATENT SUBCLASS 8 / 689
.~.~.~ Diazines (including hydrogenated)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
688  DF  .~.~ Six-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen {1}
689.~.~.~ Diazines (including hydrogenated)

DEFINITION

Classification: 8/689

Diazines (including hydrogenated):

(under subclass 688) Subject matter wherein the hetero ring contains two nitrogen atoms, including hydrogenated compounds.