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Expired Canadian patentCanada

Solution-phase single hybridization assay for detecting polynucleotide sequences

CA 1290664 C · Owner: Dattagupta, Nanibhushan · Inventors: Dattagupta, Nanibhushan

CIPO record

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Abstract From the Canadian patent

A process for determining the presence of a particular nucleic acid sequence in a test sample comprising, (a) chemically modifying nucleic acids in the test sample either to introduce a label or a reactive site in a manner that supports their hybridizability (b) contacting under hybridization conditions the chemically modified sample nucleic acids with a hybridizable nucleic acid probe which either when the, sample nucleic acids have been modified to introduce a label, carries a reactive site or, when the sample nucleic acids have been modified to introduce a reactive site is, labeled, (c) contacting the solution resulting from step (b) with a immobilized form of a reactive partner to the …

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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 October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 29, 1986
GrantedOctober 15, 1991
Term endedOctober 15, 2008
Patent numberCA 1290664 C
Classification (IPC)C12Q1/68 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 29, 1986Patent grantedOct 15, 1991Term endedOct 15, 2008

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