US PATENT SUBCLASS 8 / 191
.~.~.~.~ Three-membered ring with two C and one N

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

115.51  DF  CHEMICAL MODIFICATION OF TEXTILES OR FIBERS OR PRODUCTS THEREOF {7}
116.1  DF  .~ Cellulose fibers {8}
181  DF  .~.~ Treatment with nitrogen-containing organic compound {6}
189  DF  .~.~.~ Heterocyclic nitrogen compound {2}
191.~.~.~.~ Three-membered ring with two C and one N

DEFINITION

Classification: 8/191

(under subclass 189) Processes wherein the heterocyclic ring consists of 2 carbon atoms and one nitrogen atom.