Adamantane-derivatives in the prevention and treatment of cerebral ischemia
CA 2014453 C · Owner: Bormann, Joachim · Inventors: Bormann, Joachim; Schatton, Wolfgang; Gold, Markus R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Use of an adamantane derivative of the general formula, (see above formula), wherein R1 and R2 are identical or different representing hydrogen or a straight or branched alkyl group of 1 to 6 C atoms or, in conjunction with N a, heterocyclic group with 5 or 6 ring C atoms; wherein R3 and R4 are identical or different being selected from hydrogen, a straight or branched alkyl group of 1 to 6 C atoms, a cycloalkyl group with or 6 C atoms, and phenyl;, wherein R5 is hydrogen or a straight or branched C1 - C6 alkyl group, or a pharmaceutically-acceptable salt thereof, for the prevention or treatment of cerebral ischemia.
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 April 11, 1990 and granted March 28, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 11, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 11, 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.
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.