Expired Canadian patentCanada
Treatment of obesity
CA 2003524 C · Owner: Scheinbaum, Monte Lee · Inventors: Scheinbaum, Monte Lee
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
N,N-dimethyl-1-1-(4-chlorophenyl)cyclobutyl-3-methylbutylamine hydrochloride is used in the treatment of obesity in humans.
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 November 21, 1989 and granted October 19, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 21, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 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.
FiledNovember 21, 1989
GrantedOctober 19, 1999
Term endedNovember 21, 2009
Patent numberCA 2003524 C
Classification (IPC)A61K31/13
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.