3-benzoylindole derivatives and drugs containing the same
CA 2294772 A1 · Owner: Nagano, Eiichi · Inventors: Sato, Hiroki; Fukuda, Yoichi; Nagano, Eiichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
3-Benzoylindole derivatives represented by general formula (I) wherein R1 represents lower alkyl; n is an integer of from 1 to 5; R2 and R3 represent each hydrogen, lower alkyl or optionally substituted phenyl; and R4 represents hydrogen or lower alkyl. Because of having a potent .alpha.1-adrenergic receptor blocking effect and a testosterone 5.alpha.-reductase inhibitory effect and showing a high safety, these compounds are useful as preventives and/or remedies for prostatic hypertrophy urinary disorders in association , with prostatic hypertrophy baldness or acne.
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 July 15, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 15, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 15, 2020.
- 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.