US PATENT SUBCLASS 44 / 427
.~.~.~ Chalcogen attached directly or indirectly to the benzene ring by nonionic bonding

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}
426  DF  .~.~ Benzene ring bonded directly to the nitrogen {3}
427.~.~.~ Chalcogen attached directly or indirectly to the benzene ring by nonionic bonding {1}
428  DF  .~.~.~.~> Acyclic carbon bonded directly to the nitrogen

DEFINITION

Classification: 44/427

Chalcogen attached directly or indirectly to the benzene ring by nonionic bonding:

(under subclass 426) Compositions wherein the benzene ring is attached directly or indirectly by nonionic bonding to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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