US PATENT SUBCLASS 507 / 244
.~.~.~ Oxygen is attached directly or indirectly to carbon by nonionic bonding

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.~.~.~ Oxygen is attached directly or indirectly to carbon by nonionic bonding {2}
245  DF  .~.~.~.~> Organic component contains a nitrogen attached directly to oxygen by nonionic bonding (e.g., nitroaromatic, amineoxide, etc.)
246  DF  .~.~.~.~> Organic component contains an ether linkage

DEFINITION

Classification: 507/244

Oxygen is attached directly or indirectly to carbon by nonionic bonding:

(under subclass 239) Compositions wherein the organic component contains nitrogen and oxygen both of which are attached to carbon directly or indirectly by nonionic bonding (e.g., alkanolamines, amino acids, ureas, amides, etc.).

(1) Note. Nitrogen or oxygen as part of a mere counterion to an ionic compound does not bring the composition into this subclass. (For example, an alkylmagnesium nitrate is classified in subclass 203 above.)

(2) Note. Solid inorganic oxides treated with a nitrogen containing organic compound are not nonionically bonded unless there is disclosure to the contrary and are classified

in subclasses 239+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

269+, for cyanate salts.