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Expired Canadian patentCanada

Fibrinolytic composition

CA 1297792 C · Owner: Hunter, Robert L. · Inventors: Duncan, Alexander; Hunter, Robert L.

CIPO record

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Abstract From the Canadian patent

IMPROVED FIBRINOLYTIC COMPOSITION", Abstract of the Invention In accordance with the present invention a, composition is provided that is effective in dissolving blood clots and reestablishing and maintaining blood flow through thrombosed coronary or other blood vessels. The fibrinolytic composition of the present invention comprises an enzyme such as streptokinase, urokinase, tissue plasminogen activator or other fibrinolytic enzyme, and a surface-active copolymer. The surface-active copolymer can be an ethylene oxide-propylene oxide condensation product with the following general formula: HO(C2H4O)b(C3H6O)a(C2H4O)bH, wherein a is an integer such that the hydrophobe represented by (C3H6O) …

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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 March 24, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 13, 1987
GrantedMarch 24, 1992
Term endedMarch 24, 2009
Patent numberCA 1297792 C
Classification (IPC)A61K31/76 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMay 13, 1987Patent grantedMarch 24, 1992Term endedMarch 24, 2009

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