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Expired Canadian patentCanada

Treatment of prostatic carcinoma with 17beta-n-mono- substituted-carbamoyl-4-aza-5alpha-androst-1-en-3-ones

CA 1302276 C · Owner: Reynolds, Glenn F. · Inventors: Rasmusson, Gary H.; Reynolds, Glenn F.

CIPO record

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Abstract From the Canadian patent

OF THE INVENTION, 17.beta.-N-monosubstituted-carbamoyl-4-aza-5.alpha.androst-1-en-3-ones of the formula:, wherein R1 is selected from hydrogen methyl and, ethyl and R2 is a branched chain alkyl of from 3-12 carbons, and R', R" and R"' are hydrogen or methyl are active as testosterone 5.alpha.- reductase inhibitors and are useful for the treatment of prostatic carcinoma.

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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 June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 31, 1988
GrantedJune 2, 1992
Term endedJune 2, 2009
Patent numberCA 1302276 C
Classification (IPC)A61K31/56 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedMarch 31, 1988Patent grantedJune 2, 1992Term endedJune 2, 2009

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.