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Expired Canadian patentCanada

Lipase single reagent system

CA 2017509 C · Owner: Kwan, Shing Fai · Inventors: Kwan, Shing Fai; Hunt, Rebecca Jolene

CIPO record

Overview

Drawings and full text

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

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Abstract From the Canadian patent

A single system reagent for the determination of lipase, formulated as an emulsion comprising a lipaseactive fatty acid source; a first lipase activator comprising colipase; a second lipase activator; a lipoprotein lipase inhibitor; a first emulsion stabilizer comprising Triton* X100; a second emulsion stabilizer; a buffer; and an anti-precipitant.

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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

  • Filed May 24, 1990 and granted November 12, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 24, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 24, 2012.
  • 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 24, 1990
GrantedNovember 12, 1996
Term endedMay 24, 2010
Patent numberCA 2017509 C
Classification (IPC)C12Q1/61 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMay 24, 1990Patent grantedNov 12, 1996Term endedMay 24, 2010

Sources & verification

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