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Expired Canadian patentCanada

Drug for neuroprotection

CA 2124284 C · Owner: Shirasaki, Yasufumi · Inventors: Shirasaki, Yasufumi; Yamaguchi, Hitoshi

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A drug containing a calmodulin inhibitor as an active ingredient is disclosed. This drug is useful in the suppression of neuronal cell death, in particular brain neuronal cell death, due to, for example cerebral ischemia. Also, a drug containing a compound capable of inhibiting binding of calmodulin to a cytoskeltal protein as an active ingredient and a drug containing a compound suppressing the breakdown of a cytoskeltal protein as an active ingredient are disclosed. These drugs are useful in the treatment and prevention of various diseases in the brain and sequelae thereof as well as in the prevention of relapses of these diseases.

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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

  • Filed May 25, 1994 and granted October 1, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 25, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 25, 2016.
  • 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 25, 1994
GrantedOctober 1, 2002
Term endedMay 25, 2014
Patent numberCA 2124284 C
Classification (IPC)A61K31/49 +2 more

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedMay 25, 1994Patent grantedOct 1, 2002Term endedMay 25, 2014

Sources & verification

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