US PATENT SUBCLASS 436 / 142
.~.~ Unsaturated (e.g., ethylene, diene, etc.)

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

139  DF  HYDROCARBON {3}
141  DF  .~ Acyclic (e.g., methane, octane, isoparaffin, etc.) {1}
142.~.~ Unsaturated (e.g., ethylene, diene, etc.)

DEFINITION

Classification: 436/142

Unsaturated (e.g., ethylene, diene, etc.):

(under subclass 141) Subject matter in which the hydrocarbon possesses one or more double or triple bonds between two or more carbon atoms.