US PATENT SUBCLASS 585 / 622
.~.~.~.~.~ With P containing extraneous agent

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}
617  DF  .~.~.~ Using nonhydrocarbon acceptor {2}
621  DF  .~.~.~.~ Elemental O acceptor {2}
622.~.~.~.~.~ With P containing extraneous agent {1}
623  DF  .~.~.~.~.~.~> Sn-containing

DEFINITION

Classification: 585/622

With P containing extraneous agent:

(under subclass 621) Subject matter wherein the process employs an extraneous agent, that is, a material which does not supply atoms to the final product or by-product, which contains phosphorus in free or combined form.