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Expired Canadian patentCanada

Indole derivatives, processes for their preparation, and their use as medicaments

CA 1331603 C · Owner: Horstmann, Harald · Inventors: Boltze, Karl-Heinz; Horstmann, Harald

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Abstract From the Canadian patent

The invention relates to indole derivatives of Formula (I), (I), in which, X represents -COO- or -CONH- and R represents a tetrahydrofuran-2-yl, a tetrahydropyran-2-yl an alkoxybenzyl or a straight or branched alkyl group which can optionally be substituted by a hydroxyl group or X-R together, form an oxazoline ring which can be substituted by one or more alkyl groups, and their pharmaceutically acceptable salts formed with bases and, a method for their preparation. Also included in the invention are compositions containing said indoles and methods for their use as antiphlogistic agents.

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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 August 23, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 23, 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.
FiledFebruary 24, 1983
GrantedAugust 23, 1994
Term endedAugust 23, 2011
Patent numberCA 1331603 C
Classification (IPC)C07D209/28 +2 more

Timeline

Timeline From CIPO dates

1984198719901993199619992002200520082011Application filedFeb 24, 1983Patent grantedAug 23, 1994Term endedAug 23, 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.