Preparation of 4-pentenoates by isomerization
CA 1313671 C · Owner: E.I. Du Pont De Nemours And Company · Inventors: Waller, Francis Joseph; Burke, Patrick Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Preparation Of 4-Pentenoates By Isomerization Abstract, Perfluorinated acid ion-exchange resins are highly effective catalysts for the isomerization of 3-pentenoic compounds to 4-pentenoic compounds especially, if the catalysts contain a group 8 metal in an oxidation state of at least +2.
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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 February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2010.
- 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
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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.