Expired Canadian patentCanada
Imide derivatives, and their production and use
CA 1329935 C · Owner: Sumitomo Pharmaceuticals Company Limited · Inventors: Kojima, Atsuyuki; Antoku, Fujio; Yoshigi, Mayumi
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention is directed to imide derivatives of the formula:, or their salts, such compounds are useful as antipsychotic drugs.
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
- Granted May 31, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 31, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 25, 1987
GrantedMay 31, 1994
Term endedMay 31, 2011
Patent numberCA 1329935 C
Classification (IPC)C07D401/06 +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.