Heterogeneous isoparaffin/olefin alkylation process
CA 2005258 A1 · Owner: Kennedy, Clinton R. · Inventors: Kennedy, Clinton R.; Chou, Tai-Sheng; Kurtas, Robert S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for alkylating an isoparaffin containing up to 20 carbon atoms with an olefin containing from 2 to 12 carbon atoms comprises contacting the isoparaffin and olefin with a catalyst comprising a large pore zeolite and a Lewis acid at a temperature of -40°C to 500°C and a pressure up to 5000 psig (35000 kPa) whereinthe molar ratio of the isoparaffin to the olefin is from 1:1 to 50:1 and the contacting takes place in the presence of water.
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 December 12, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2011.
- 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.