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Expired Canadian patentCanada

Immunosorbent-amidolytic method for detecting human urinary plasminogenactivator precursor (pro-upa) and human urinary plasminogen activator (u-pa)

CA 1291424 C · Owner: Parenti, Francesco · Inventors: Nolli, Marialuisa; Parenti, Francesco; Corti, Angelo

CIPO record

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Abstract From the Canadian patent

The present invention is directed to a method of selective assay of urinary plasminogen activator zymogen (pro-uPA) (commonly known also as pro-urokinase) and urinary plasminogen activator (u-PA) (commonly known also as urokinase) in biological fluids as well as in any kind of solution containing them, either separately or jointly. One feature of this method is in fact that it allows the determination of pro-uPA also in the presence of its enzymatically active derivative u-PA.

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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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2008.
  • 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 26, 1987
GrantedOctober 29, 1991
Term endedOctober 29, 2008
Patent numberCA 1291424 C
Classification (IPC)G01N33/57 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedFeb 26, 1987Patent grantedOct 29, 1991Term endedOct 29, 2008

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