Expired Canadian patentCanada
Furanuronic acid derivatives, process for their production and their use
CA 1291752 C · Owner: Sandoz Ltd. · Inventors: Vogel, Arnold; Gadient, Fulvio
Overview
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Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1'-desoxy-1'-(6-amino-9-purinyl)-.beta.-D-ribofuranuronic acid thioamides of formula, wherein R1, R2 and R3 possess various definitions given in claim 2, are effective against raised blood pressure.
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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 November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
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FiledDecember 14, 1987
GrantedNovember 5, 1991
Term endedNovember 5, 2008
Patent numberCA 1291752 C
Classification (IPC)C07H19/16 +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.