US PATENT SUBCLASS 44 / 430
.~.~.~ Plural nitrogens bonded to the same benzene

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}
430.~.~.~ Plural nitrogens bonded to the same benzene {1}
431  DF  .~.~.~.~> Plural rings bonded to the same nitrogen atom

DEFINITION

Classification: 44/430

Plural nitrogens bonded to the same benzene:

(under subclass 426) Compositions wherein the benzene ring is bonded directly to plural nitrogens.

(1) Note. An example of an ingredient provided for herein is phenylene diamine.