US PATENT SUBCLASS 507 / 245
.~.~.~.~ Organic component contains a nitrogen attached directly to oxygen by nonionic bonding (e.g., nitroaromatic, amineoxide, 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}
244  DF  .~.~.~ Oxygen is attached directly or indirectly to carbon by nonionic bonding {2}
245.~.~.~.~ Organic component contains a nitrogen attached directly to oxygen by nonionic bonding (e.g., nitroaromatic, amineoxide, etc.)

DEFINITION

Classification: 507/245

Organic component contains a nitrogen attached directly to oxygen by nonionic bonding (e.g., nitroaromatic, amineoxide, etc.):

(under subclass 244) Compositions wherein the organic component contains a direct nitrogen to oxygen nonionic bond (e.g., trimethylamine oxide, nitroaromatics, nitrosoaromatics, etc.).

(1) Note. Nitrogen and/or oxygen as part of a mere counterion to an ionic compound is not a basis for including a composition in this subclass. (For example, an alkylmagnesium nitrate is classifiable in subclass 203 above.)

SEE OR SEARCH THIS CLASS, SUBCLASS:

269+, for isocyanate salts.