Canadian application, no grantCanada
Method for producing quinazoline-diones in solid phase and use of the same
CA 2294175 A1 · Owner: Kling, Andreas · Inventors: Kling, Andreas; Puhl, Michael; Adida, Serge
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 a method for producing quinazoline-dione derivatives and the use of said derivatives.
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 May 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 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.
FiledMay 29, 1998
GrantedNo grant recorded
Term endedMay 29, 2018
Patent numberCA 2294175 A1
Classification (IPC)C07D239/96
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.