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Expired Canadian patentCanada

G protein-coupled glutamate receptors

CA 2098295 C · Owner: Hagen, Frederick Stamner · Inventors: Almers, Wolfhard; Mulvihill, Eileen Ranae; Hagen, Frederick Stamner

CIPO record

Overview

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

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Abstract From the Canadian patent

Mammalian G protein-coupled glutamate receptors are identified isolated and , purified. The receptors have been cloned sequenced and expressed by recombinant means. The receptors and antibodies thereto can be used to identify agonists and antagonists of G protein-coupled glutamate receptor mediated neuronal excitation and in methods of diagnosis.

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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 December 12, 1991 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 12, 2011.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 12, 1991
GrantedApril 22, 2003
Term endedDecember 12, 2011
Patent numberCA 2098295 C
Classification (IPC)C12N15/12 +2 more

Timeline

Timeline From CIPO dates

1992199419961998200020022004200620082010Application filedDec 12, 1991Patent grantedApril 22, 2003Term endedDec 12, 2011

Sources & verification

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