Expired Canadian patentCanada
Use of .beta.-receptor blocking agents
CA 2033975 C · Owner: Agerup, Bengt · Inventors: Aust, Fredrik; Agerup, Bengt
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 present invention relates to a novel use of .beta.-receptor blocking agents for preparation of a drug for treatment of Ménières disease.
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 July 25, 1990 and granted October 26, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 25, 2012.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 25, 1990
GrantedOctober 26, 1993
Term endedJuly 25, 2010
Patent numberCA 2033975 C
Classification (IPC)A61K31/53 +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.