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Expired Canadian patentCanada

Method for assaying 1,5-anhydroglucitol and kit therefor

CA 1306172 C · Owner: Akanuma, Hiroshi · Inventors: Kato, Kazuo; Yabuuchi, Masahiko; Nakamura, Tsuneo

CIPO record

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Abstract From the Canadian patent

This invention relates to a novel method for assaying 1,5-anhydroglucitol, which is expected to serve as a marker for diabetes, and a kit therefor. More particularly it relates to:, (1) a method for assaying 1,5-anhydroglucitol which comprises selectively removing, sugars from a specimen containing 1,5anhydroglucitol; allowing pyranose oxidase or L-sorbose oxidase to act on 1,5-, anhydroglucitol contained in the sample thus obtained in the presence of oxygen; and determining 1,5-anhydroglucitol from the amount of the hydrogen peroxide thus formed; and, (2) a reagent kit for assaying 1,5-anhydroglucitol which comprises an agent for, removing sugars a reagent for detecting, hydrogen peroxide …

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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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 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.
FiledSeptember 21, 1987
GrantedAugust 11, 1992
Term endedAugust 11, 2009
Patent numberCA 1306172 C
Classification (IPC)C12Q1/26 +1 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedSep 21, 1987Patent grantedAug 11, 1992Term endedAug 11, 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.