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Expired Canadian patentCanada

Pharmaceuticals, phosphorus-containing 2-isoxazolines and isoxazoles contained therein, and processes for the preparation of these heterocyclic compounds

CA 1329604 C · Owner: Hoechst Aktiengesellschaft · Inventors: Dickneite, Gerhard; Schorlemmer, Hans Ulrich; Gebert, Ulrich

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Abstract From the Canadian patent

Pharmaceuticals phosphorus-containing 2-isoxazolines and isoxazoles contained therein, and processes for the preparation of these heterocyclic compounds Pharmaceuticals containing or composed of at least one compound of the formula I and/or one of its physiologically tolerated salts where appropriate where the, compounds of the formula I can where appropriate, be in, the form of pure stereoisomers or mixtures thereof; formula I is:, (I), in which R1 = organic radical or halogen A = C,C single or C,C double bond, n = 0 1 or 2, and, X and Y = alkyl radical or = -OR2 or -NR2R3 with, R2 and R3 = H or optionally substituted aliphatic radical. The pharmaceuticals are suitable for the prophylaxis …

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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 17, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 17, 2011.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 25, 1988
GrantedMay 17, 1994
Term endedMay 17, 2011
Patent numberCA 1329604 C
Classification (IPC)C07F9/54 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedOct 25, 1988Patent grantedMay 17, 1994Term endedMay 17, 2011

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