Expired Canadian patentCanada
Hetrazepines and processes for preparing them
CA 1338287 C · Owner: Heuer, Hubert · Inventors: Walther, Gerhard; Muacevic, Gojko; Harreus, Albrecht
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 invention relates to new hetrazepines of general formula, , Ia Ib, The new compounds are intended for use in treating pathological conditions and diseases in which PAF (platelet activating factor) is implicated.
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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 April 30, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 22, 1987
GrantedApril 30, 1996
Term endedApril 30, 2013
Patent numberCA 1338287 C
Classification (IPC)C07D495/14 +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.