US PATENT SUBCLASS 507 / 129
.~.~ Organic component contains nitrogen 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

100  DF  EARTH BORING {4}
103  DF  .~ Contains organic component {14}
129.~.~ Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding {2}
130  DF  .~.~.~> Nitrogen is part of a hetero ring
131  DF  .~.~.~> Oxygen is attached directly or indirectly to carbon by nonionic bonding {2}

DEFINITION

Classification: 507/129

Organic component contains nitrogen attached directly or indirectly to carbon by nonionic bonding:

(under subclass 103) Composition wherein nitrogen is attached to carbon directly or indirectly by nonionic bonding.

(1) Note. A composition with nitrogen as part of a mere counterion to an ionic compound is not a basis for including such a composition in this subclass. For example, an ammonium alkylsulfonate is included in subclass 135; however, if the ammonium cation is a quaternary alkylammonium, then placement is in subclass 129. An additional crossreference in subclass 135 is highly recommended (see subclass 100, (5) Note).

SEE OR SEARCH THIS CLASS, SUBCLASS:

140+, for cyanate and isocyanate salts.