Androstane derivatives, processes for their manufacture and their use as medicaments
CA 1210754 A · Owner: Schering Aktiengesellschaft · Inventors: Albring, Manfred; Laurent, Henry; Wiechert, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Novel androstane derivatives processes for, their manufacture and their use as medicaments Novel androstane derivatives of the general formula I (I), (in which , represents a single or double bond R1, represents methyl or ethyl, R2 represents H or C1-C8alkyl, X represents -(CH2)n-, -CE=CH-(CH2)m- or -C?C-(CH2)m-, n representing 2 to 6 and m representing 1 to 4, -A-B- represents -CH2-CH2-, -CH=CH- -CCl-CH-, , or , with the exception of 17.alpha.-(3acetoxypropyl)-17.beta.-hydroxy-.DELTA.4,6-androstadien-3-one) and processes for their manufacture. The novel compounds are pharmacologically active substances distinguished, especially on topical application by a sebum-suppressive activity, and …
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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
- Granted September 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 2, 2003.
- 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.