Triphenylethylene derivative and pharmaceutical drug containing the same
CA 2109426 A1 · Owner: Asahi Kasei Kogyo Kabushiki Kaisha · Inventors: Ando, Satoshi; Kouji, Hiroyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to a triphenylalkene derivative represented by the following general formula (1) or a pharmaceutically acceptable acid addition salt thereof, and it provides a pharmaceutical composition which possesses a tumor inhibition function and also has osteoporosis curing activity:, (2), (1) (3), (4), wherein R1 is selected from the formulae (2) (3) and, (4), R6 and R7 is a hydrogen atom an alkyl group or a, cycloalkyl group, or forms a heterocyclic group together with the adjoining nitrogen atom (but R6 and R7 are not hydrogen atoms at the same time); R8 represents a hydrogen atom or an alkylcarbonyl group; R2 represents an alkyl group or a cycloalkyl group; R3 represents …
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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
- Filed April 30, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2014.
- 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.