US PATENT SUBCLASS 44 / 418
.~.~ Having -C(=X)- bonded directly to the nitrogen, wherein X is chalcogen

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}
418.~.~ Having -C(=X)- bonded directly to the nitrogen, wherein X is chalcogen {1}
419  DF  .~.~.~> Additional nitrogen attached indirectly to the -C(=X)- group by acyclic nonionic bonding

DEFINITION

Classification: 44/418

Having -C(=X)- bonded directly to the nitrogen, wherein X is chalcogen:

(under subclass 412) Compositions wherein the nitrogen is bonded directly to a-C (=X)- group, wherein X is chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

(1) Note. Carboxylic acid amides and thiocarboxylic acid amides are the principal ingredients for which provision is made herein.