Expired Canadian patentCanada
Ceric oxidant
CA 1269394 C · Owner: Kreh, Robert P. · Inventors: Kreh, Robert 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 solid product cerium(IV) methanesulfonate, hydroxide hydrate is disclosed and used in aqueous, solutions as a highly effective oxidant to produce carbonyl containing products from aromatic and alkyl aromatic compounds.
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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 May 22, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 2007.
- 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 4, 1987
GrantedMay 22, 1990
Term endedMay 22, 2007
Patent numberCA 1269394 C
Classification (IPC)C07C47/22 +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.