Canadian application, no grantCanada
Recovery of hydrogen cyanide during the manufacture of acrylonitrile or methacrylonitrile
CA 2332502 A1 · Owner: Bp Amoco Corporation · Inventors: Keckler, Kenneth P.; Godbole, Sanjay P.
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 process for the enhanced recovery of waste organics mainly hydrogen cyanide , (HCN) and acrylonitrile from the process flare material obtained from the reactor effluent of an ammoxidation reaction of propylene or isobutylene.
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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
- Filed May 18, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 18, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 18, 1999
GrantedNo grant recorded
Term endedMay 18, 2019
Patent numberCA 2332502 A1
Classification (IPC)C07C253/34 +1 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.