US PATENT SUBCLASS 585 / 420
.~.~.~ Group VI metal


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

400  DF  AROMATIC COMPOUND SYNTHESIS {15}
407  DF  .~ By ring formation from nonring moiety, e.g., aromatization, etc. {7}
418  DF  .~.~ Using transition metal-containing catalyst {2}
420.~.~.~ Group VI metal {1}
421  DF  .~.~.~.~> With alkaline metal compound


DEFINITION

Classification: 585/420

Group VI metal:

(under subclass 418) Subject matter wherein the catalyst contains chromium, molybdenum, or tungsten.