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Expired Canadian patentCanada

Cycloalkane-indene- carboximidamide derivatives

CA 1254230 A · Owner: Akzo N.V. · Inventors: Beetz, Tom

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

The present invention is dealing with cycloalkane-indenecarboximidamide derivatives having the general formula: wherein, Rx together with either Ry1 or Ry2 represent the moiety (the other Ry being hydrogen), n represents the number 1 2 or 3, R represents hydrogen or a (1-4 C)-alkyl group R1 represents hydrogen, (1-4 C)-alkyl, hydroxyl (1-4 C)-alkoxy, or an amino group which is unsubstituted or substituted by (1-4 C)-alkyl and, R2 is hydrogen, hydroxyl or (1-4 C)-alkyl as well as the pharmaceutically acceptable salts thereof with, powerful blood platelet aggregation-inhibiting activity.

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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 16, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 16, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 22, 1985
GrantedMay 16, 1989
Term endedMay 16, 2006
Patent numberCA 1254230 A
Classification (IPC)A61K31/15 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedMay 22, 1985Patent grantedMay 16, 1989Term endedMay 16, 2006

Sources & verification

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