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Expired Canadian patentCanada

Preparation of functional human urokinase proteins

CA 1341301 C · Owner: Vehar, Gordon Alan · Inventors: Heyneker, Herbert Louis; Holmes, William Evans; Vehar, Gordon Alan

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

The human protein urokinase, and derivatives thereof, and its associated physical and biological activities and its preparation via novel recombinant DNA technology constitute the subject matter of the present disclosure.

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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 9, 2001. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 9, 2018.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 14, 1983
GrantedOctober 9, 2001
Term endedOctober 9, 2018
Patent numberCA 1341301 C
Classification (IPC)C12N15/58 +2 more

Timeline

Timeline From CIPO dates

198419881992199620002004200820122016Application filedApril 14, 1983Patent grantedOct 9, 2001Term endedOct 9, 2018

Sources & verification

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