US PATENT SUBCLASS 568 / 794
.~.~.~.~.~.~.~ Heavy metal or aluminum containing catalyst

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
700  DF  .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
715  DF  .~.~.~ Benzene ring containing {8}
716  DF  .~.~.~.~ Phenols (H of -OH may be replaced by a Group IA or IIA light metal) {14}
780  DF  .~.~.~.~.~ Acyclic polycarbon hydrocarbyl group bonded directly to the benzene ring {4}
790  DF  .~.~.~.~.~.~ Preparing by catalytic alkylation {4}
794.~.~.~.~.~.~.~ Heavy metal or aluminum containing catalyst

DEFINITION

Classification: 568/794

Heavy metal or aluminum containing catalyst:

(under subclass 790) Processes wherein the catalyst contains aluminum or a metal having a specific gravity greater than 4 in any form.