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Expired Canadian patentCanada

Covalent oligonucleotide-horseradish peroxidase conjugate

CA 1300532 C · Owner: Oaks, Fred T. · Inventors: Oaks, Fred T.; Levenson, Corey; Chang, Chu-An

CIPO record

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Abstract From the Canadian patent

Covalent conjugates of oligonucleotide chains and horseradish peroxidase (HRP) are disclosed. The oligonucleotide chains are provided with one or more sulfhydryl moieties using selected sulfhydryl functionalizing reagents, and are coupled through the sulfhydryl groups to a complex of HRP and an activated ester such as mal-sac-HNSA. The functionalizing reagents are structured so as to introduce a spacer moiety which optimizes the distance between the oligonucleotide chain and the HRP label.

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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 12, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 12, 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 26, 1988
GrantedMay 12, 1992
Term endedMay 12, 2009
Patent numberCA 1300532 C
Classification (IPC)C12N9/96 +1 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedSep 26, 1988Patent grantedMay 12, 1992Term endedMay 12, 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.