US PATENT SUBCLASS 8 / 570
.~ Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen

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

550  DF  ORGANIC ADDITIVE FOR DYE COMPOSITION, DYE COMPOSITION CONTAINING ORGANIC ADDITIVE, PROCESS OR PRODUCT; OTHER THAN EMULSIFIER, PH ADJUSTER OR STARCH OR GUM PRINT PASTE THICKENER {24}
570.~ Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen {3}
571  DF  .~.~> Hetero N ring contains a sulfur atom (including hydrogenated)
572  DF  .~.~> Hetero N ring contains an oxygen atom (including hydrogenated)
573  DF  .~.~> Hetero N ring contains at least two nitrogen hetero atoms (including hydrogenated)

DEFINITION

Classification: 8/570

Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen:

(under subclass 550) Subject matter wherein the organic agent contains a five-membered hetero ring which has at least two ring hetero atoms at least one of which is nitrogen.