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Expired Canadian patentCanada

Fluorinated diaminoalkene derivatives

CA 1204770 A · Owner: Merrell Toraude Et Compagnie · Inventors: Gerhart, Fritz; Van Dorsselaer, Viviane; Danzin, Charles

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Abstract From the Canadian patent

Novel fluorinated alkenylene diamine derivatives are inhibitors of ornithine decarboxylase enzyme and have the following general Formula I:- Formula I, wherein:-, Rc represents hydrogen or -COR5 where R5 is, as defined below;, R1 represents hydrogen or C1-C6 alkyl; one of R2 and R3 represents hydrogen and the other represents C1-C6 alkyl;, R5 represents hydroxy or C1-C8 alkoxy; m and n independently represent 0 or 1 but m + n = 0 or 1;, p represents 1 or 2.

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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 May 20, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 20, 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.
FiledAugust 13, 1982
GrantedMay 20, 1986
Term endedMay 20, 2003
Patent numberCA 1204770 A
Classification (IPC)C07C43/17 +2 more

Timeline

Timeline From CIPO dates

1983198619891992199519982001Application filedAug 13, 1982Patent grantedMay 20, 1986Term endedMay 20, 2003

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