Pyridyl derivatives, pharmaceutical compositions containing these compounds and processes for preparing them
CA 2055950 A1 · Owner: Dr. Karl Thomae Gesellschaft M.B.H. · Inventors: Eisert, Wolfgang; Muller, Thomas; Weisenberger, Johannes
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Pyridyl Derivatives, This invention relates to new pyridyl derivatives of formula I, ( I), (wherein, R1 to R6 A, X and n are defined as in claim 1) the isomers and addition salts thereof, which have valuable pharmacological properties, particularly antithrombotic activity and thromboxane-mediated activities. The new compounds have an effect on PGE2-production and are also simultaneously thromboxane antagonists (TRA) and thromboxane synthesis inhibitors (TSH).
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, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 21, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 21, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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.