Expired Canadian patentCanada
Imidazotriazolopyrimidines, process for preparing them and their use as pharmaceutical compositions
CA 2242097 C · Owner: Pohl, Gerald · Inventors: Pohl, Gerald; Kummer, Werner; Weiser, Thomas
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 imidazotriazolopyrimidinone derivatives and fundamental imidazotriazolopyrimidinone substances processes for preparing them and their use as pharmaceutical compositions.
Read the whole patent
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
- Filed June 26, 1998 and granted May 13, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 26, 2020.
- 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 26, 1998
GrantedMay 13, 2003
Term endedJune 26, 2018
Patent numberCA 2242097 C
Classification (IPC)C07D487/14 +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.