US PATENT SUBCLASS 44 / 429
.~.~.~ The benzene ring is part of a polycyclo ring system

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}
429.~.~.~ The benzene ring is part of a polycyclo ring system

DEFINITION

Classification: 44/429

The benzene ring is part of a polycyclo ring system:

(under subclass 426) Compositions wherein the nitrogen is bonded directly to a benzene ring that is part of a polycyclo ring system.

(1) Note. An example of an ingredient provided for herein is alpha-naphthylamine.