Process for isomerizing alkyl aromatic hydrocarbons
CA 1238054 A · Owner: Mobil Oil Corporation · Inventors: Vartuli, James C.; Chu, Yung-Feng
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ethylbenzene is isomerized selectively to produce para xylene by passing ethylbenzene and hydrogen under isomerizing conditions over a catalyst comprising ZSM-22 or ZSM-23 zeolite and a hydrogenation/ dehydrogenation metal, wherein the hydrogenation/dehydrogenation metal is incorporated in the catalyst after any steaming of the zeolite.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 14, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 14, 2005.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.