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Expired Canadian patentCanada

Process for enzymatic analysis

CA 1072868 A · Owner: Boehringer Mannheim G.M.B.H. · Inventors: Klose, Sigmar; Hagen, Alexander

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A process is provided for the enzymatic analysis by the enzymatic reaction of a substance to be determined and measurement of the increase or decrease of a reaction component of the main or of a subsequent reaction; in the process there is added to a solution which contains dissolved enzyme a sample solution containing a substance to be determined and a particular reaction component is measured, the enzyme solution is circulated and, after the measurement of the substance to be determined the solution is passed through a reactor which completely removes the measured reaction product from the solution or converts it into a non-disturbing product and the enzyme solution thereafter obtained, …

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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 4, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 4, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMarch 4, 1980
Term endedMarch 4, 1997
Patent numberCA 1072868 A
Classification (IPC)C12Q1/60 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedMarch 4, 1980Term endedMarch 4, 1997

Sources & verification

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