Canadian application, no grantCanada
Process for conversion of ethylbenzene
CA 2244181 A1 · Owner: Exxon Chemical Patents Inc. · Inventors: Clem, Kenneth Ray; Lattner, James Richardson
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A feedstream containing ethylbenzene is passed over a molecular sieve membrane. At least a part of the ethylbenzene which has permeated is converted to benzene and/or xylenes.
Read the whole patent
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
- Filed January 22, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 22, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 22, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJanuary 22, 1997
GrantedNo grant recorded
Term endedJanuary 22, 2017
Patent numberCA 2244181 A1
Classification (IPC)C07C15/04 +2 more
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.