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Expired Canadian patentCanada

Method, device and kit for measurement of tissue plasminogen activator activity

CA 1331158 C · Owner: Ezoe, Hisanori · Inventors: Yano, Shinya; Matsumura, Eriko; Ezoe, Hisanori

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Abstract From the Canadian patent

A true activity of tissue plasminogen activator is determined by reacting a solid phase having bound thereto anti tissue plasminogen activator antibody IgG fragment having affinity to a site other than the active site of tissue plasminogen activator with tissue plasminogen activator in a sample and then measuring an activity of the reaction product preferably in terms of an amount of a substance released from a chromogenic peptide substrate. This measurement enables to use of whole blood or diluted blood as the sample and achieves high sensitivity and high accuracy in a short period of time.

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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 2, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 2, 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.
FiledJuly 6, 1988
GrantedAugust 2, 1994
Term endedAugust 2, 2011
Patent numberCA 1331158 C
Classification (IPC)C12P21/08 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 6, 1988Patent grantedAug 2, 1994Term endedAug 2, 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.