Expired Canadian patentCanada
Bicyclic pyrimidin-5-one derivatives
CA 1207765 A · Owner: Janssen Pharmaceutica Naamloze Vennootschap · Inventors: Kennis, Ludo E.J.; Mertens, Josephus C.
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel 5H-thiazolo- and 5H-1,3,4-thiadiazolo3,2-apyrimidin-5-one and 3,4-dihydro-2H,6H-pyrimido2,1-b 1,3-thiazin-6 one derivatives, which compounds are useful psychotropic agents.
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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 July 15, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 15, 2003.
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FiledMay 28, 1982
GrantedJuly 15, 1986
Term endedJuly 15, 2003
Patent numberCA 1207765 A
Classification (IPC)C07D513/04 +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.