US PATENT SUBCLASS 44 / 420
.~.~ Carbon double bonded to the nitrogen

Current as of: June, 1999
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44 /   HD   FUEL AND RELATED COMPOSITIONS

300  DF  LIQUID FUELS (EXCLUDING FUELS THAT ARE EXCLUSIVELY MIXTURES OF LIQUID HYDROCARBONS) {31}
412  DF  .~ Organic nitrogen compound containing {12}
420.~.~ Carbon double bonded to the nitrogen {1}
421  DF  .~.~.~> Plural nitrogens attached indirectly to each other by acyclic nonionic bonding

DEFINITION

Classification: 44/420

Carbon double bonded to the nitrogen:

(under subclass 412) Compositions wherein the nitrogen is double bonded to carbon.

(1) Note. An example of an ingredient provided for herein is: [figure]