US PATENT SUBCLASS 585 / 630
.~.~.~.~.~ Cr, Mo, or W

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

500  DF  UNSATURATED COMPOUND SYNTHESIS {14}
601  DF  .~ Diolefin product {4}
616  DF  .~.~ By dehydrogenation {3}
627  DF  .~.~.~ Using extraneous nonhydrocarbon agent, e.g., catalyst, etc. {3}
629  DF  .~.~.~.~ Transition metal oxide or sulfide agent {1}
630.~.~.~.~.~ Cr, Mo, or W {1}
631  DF  .~.~.~.~.~.~> With other transition metal

DEFINITION

Classification: 585/630

Cr, Mo, or W:

(under subclass 629) Subject matter wherein a transition metal is chromium, molybdenum, or tungsten.