Expired Canadian patentCanada
Process for producing tetramic acid
CA 1304385 C · Owner: Meul, Thomas · Inventors: Meul, Thomas
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PROCESS FOR PRODUCING TETRAMIC ACID", ABSTRACT OF THE DISCLOSURE A process is disclosed for the production of tetramic acid from the novel intermediate compound 4-, benzyloxy-3-pyrrolin-2-one, by subjecting said intermediate to catalytic hydrogenolysis.
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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 June 30, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 30, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 19, 1987
GrantedJune 30, 1992
Term endedJune 30, 2009
Patent numberCA 1304385 C
Classification (IPC)C07D207/36 +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.