US PATENT SUBCLASS 549 / 85
.~.~.~.~.~.~ Metal containing catalyst utilized


Current as of: June, 1999
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549 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {2}
1  DF  .~.~ Sulfur containing hetero ring (e.g., thiiranes, etc.) {9}
29  DF  .~.~.~ The hetero ring is five-membered {13}
83  DF  .~.~.~.~ The compound consists of the ring sulfur, carbon, and hydrogen {2}
84  DF  .~.~.~.~.~ Process of forming the hetero ring from acyclic reactants only {1}
85.~.~.~.~.~.~ Metal containing catalyst utilized


DEFINITION

Classification: 549/85

(under subclass 84) Processes which utilize a metal containing catalyst.