US PATENT SUBCLASS 44 / 338
.~.~.~ Acyclic chalcogen or acyclic nitrogen bonded directly to ring carbon of the hetero ring

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}
329  DF  .~ Heterocyclic carbon compound containing a hetero ring having chalcogen or nitrogen as the only ring hetero atoms {6}
333  DF  .~.~ The hetero ring contains six members including nitrogen and carbon {5}
338.~.~.~ Acyclic chalcogen or acyclic nitrogen bonded directly to ring carbon of the hetero ring

DEFINITION

Classification: 44/338

Acyclic chalcogen or acyclic nitrogen bonded directly to ring carbon of the hetero ring:

(under subclass 333) Compositions wherein a ring carbon of the six-membered hetero ring is bonded directly to acyclic nitrogen or to acyclic chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

(1) Note. Examples of ingredients provided for herein are: [figure]