Expired Canadian patentCanada
Process and crystal forms of 2-methyl-thieno-benzodiazepine
CA 2214005 C · Owner: Larsen, Samuel Dean · Inventors: Bunnell, Charles Arthur; Hendriksen, Barry Arnold; Larsen, Samuel Dean
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 provides Form II, a pharmaceutically elegant stable polymorph of olanzapine.
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 March 22, 1996 and granted July 3, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2018.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 22, 1996
GrantedJuly 3, 2001
Term endedMarch 22, 2016
Patent numberCA 2214005 C
Classification (IPC)C07D495/04 +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.