Indoleacetic acid derivatives, process for their preparation, and medicines containing same as active ingredients
CA 2031667 A1 · Owner: Zeria Pharmaceutical Co. Ltd. · Inventors: Ueda, Ikuo; Arai, Heihachiro
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an indoleacetic acid derivative and a salt thereof expressed by the following formula (I):, (I), wherein X denotes a piperidino group 1-pyrrolidinyl group, or 3-hydroxy-1-pyrrolidinyl group; Y denotes (wherein R1 denotes a hydrogen atom or a lower alkyl group, and 1 denotes 0, 1 or 2) or (wherein R2 denotes a hydrogen atom, a lower alkyl group or a hydroxyl group, m denotes 0, 1 or 2, and n denotes 1, 2 or 3). The present invention also relates to anti-inflammatory drugs anti-, rheumatic drugs and anti-ulcer drugs containing the above compounds as active ingredients. The compounds possess a strong antiinflammatory action while causing extremely reduced …
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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 December 6, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 6, 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.