Expired Canadian patentCanada
Transdermal administration of 2-amino-6-n-propylamino-4,5,6,7-tetrahydrobenzothiazole
CA 2029524 C · Owner: Zierenberg, Bernd · Inventors: Rohr, Uwe; Zierenberg, Bernd; Herschel, Michael
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 the transdermal administration of 2-amino-6-n-propylamino-4,5,6,7tetrahydrobenzothiazole or the (-)-enantiomer or salts thereof and transdermal systems containing these active substances.
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 8, 1990 and granted December 31, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 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.
FiledNovember 8, 1990
GrantedDecember 31, 2002
Term endedNovember 8, 2010
Patent numberCA 2029524 C
Classification (IPC)A61K31/42 +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.