US PATENT SUBCLASS 44 / 312
.~ Quinone or anthraquinone containing (e.g., quinhydrone, benzoquinones, etc.)

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}
312.~ Quinone or anthraquinone containing (e.g., quinhydrone, benzoquinones, etc.)

DEFINITION

Classification: 44/312

Quinone or anthraquinone containing (e.g., quinhydrone, benzoquinones, etc.):

(under subclass 300) Compositions which contain quinone compounds.

(1) Note. Quinone compounds have one of the two following structures wherein substitution may be made for ring hydrogens only: [figure]