US PATENT SUBCLASS 507 / 249
.~.~.~.~ Organic component contains carbon double or triple bonded to nitrogen (e.g., cyano, nitrilo, etc.)

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

200  DF  WELL TREATING {4}
203  DF  .~ Contains organic component {17}
239  DF  .~.~ Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding {6}
248  DF  .~.~.~ Organic component consists only of carbon, hydrogen, and nitrogen {2}
249.~.~.~.~ Organic component contains carbon double or triple bonded to nitrogen (e.g., cyano, nitrilo, etc.)

DEFINITION

Classification: 507/249

Organic component contains carbon double or triple bonded to nitrogen (e.g., cyano, nitrilo, etc.):

(under subclass 248) Compositions wherein the nitrogen atom is double or triple bonded to carbon (e.g., a cyano or nitrilo compound, etc.).