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Expired Canadian patentCanada

Plasminogen activator complex

CA 1094449 A · Owner: Reese (Michael) Research Foundation · Inventors: Robbins, Kenneth C.; Summaria, Louis

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

23-, Abstract of the Disclosure, A functionally active fraction of plasmin is provided which is capable of forming with streptokinase a complex with plasminogen activator activity. The fraction is made by reducing the disulfide bonds of plasmin molecules while inhibiting the serine protease activity of the plasmin and separating the light (B) chain fraction from the reaction product.

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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 January 27, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 27, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 16, 1977
GrantedJanuary 27, 1981
Term endedJanuary 27, 1998
Patent numberCA 1094449 A
Classification (IPC)C12N9/68 +1 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedAug 16, 1977Patent grantedJan 27, 1981Term endedJan 27, 1998

Sources & verification

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