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Expired Canadian patentCanada

Test strip for coagulation test

CA 1249960 A · Owner: Boehringer Mannheim G.M.B.H. · Inventors: Wielinger, Hans; Becker, Udo; Lill, Helmut

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

Dry reagent for blood coagulation tests The present invention provides a dry reagent for blood coagulation tests in which an at least partial course of the coagulation cascade takes place, comprising a carrier material which contains a chromophoric substrate of a protease of the blood coagulation system, at least one factor and/or cofactor of the blood coagulation system and a buffer.

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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 February 14, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 14, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 14, 1985
GrantedFebruary 14, 1989
Term endedFebruary 14, 2006
Patent numberCA 1249960 A
Classification (IPC)C12Q1/56 +1 more

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedNov 14, 1985Patent grantedFeb 14, 1989Term endedFeb 14, 2006

Sources & verification

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