Expired Canadian patentCanada
Process for the manufacture of furan compounds
CA 1113479 A · Owner: The Standard Oil Company · Inventors: Herrington, Daniel R.; Schwerko, Albert 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
The present invention relates to a process for the manufacture of furan compounds by the direct oxidation of conjugated diolefins with air or oxygen in the liquid phase in the presence of a transition metal catalyst system.
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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 December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 1998.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 20, 1978
GrantedDecember 1, 1981
Term endedDecember 1, 1998
Patent numberCA 1113479 A
Classification (IPC)C07D307/36 +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.