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Expired Canadian patentCanada

Reagent composition adapted to the determination of peroxides and method for analytically employing such composition

CA 1101767 A · Owner: Istituto Sieroterapico E Vaccinogeno Toscano "Sclavo" S.P.A. · Inventors: Meiattini, Franco

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Abstract From the Canadian patent

A reagent for the determination of peroxides especially hydrogen peroxide, such as those originated by chemical or enzymatic reactions,which reagent comprises a hydroxybenzoate and a compound having at least one reactive group bound to a structure derived from 1-phenyl-5-pyrazolinone. A method for the enzymatic detection of a compound selected from the group consisting cholesterol, uric acid and D-galactose in which use is made of the above reagent,is also set forth.

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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 May 26, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 1998.
  • 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 15, 1977
GrantedMay 26, 1981
Term endedMay 26, 1998
Patent numberCA 1101767 A
Classification (IPC)G01N33/84 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedSep 15, 1977Patent grantedMay 26, 1981Term endedMay 26, 1998

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