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Expired Canadian patentCanada

Methods and structures employing non-radioactive chemically-labeled polynucleotide probes

CA 1309672 C · Owner: Stavrianopoulos, Jannis G. · Inventors: Johnston, Kenneth H.; Thalenfeld, Barbara E.; Kirtikar, Dollie

CIPO record

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Abstract From the Canadian patent

Non-radioactive chemically-labeled polynucleotide probes such as non-radioactive chemically-labeled single-, stranded DNA probes, are hybridized to fixed denatured, single-stranded genetic material having a make-up complementary to said probes for determining the identification and/or presence of said genetic material. The non-radioactive chemical label on said probe is employed to elicit a response therefrom so as to determine the identity and/or presence of said genetic material. It is preferred that the non-radioactive chemical label attached to the probe have an enzyme attached thereto after hybridization, and that the presence of the enzyme attached to the chemically-labeled probe be …

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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 November 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 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.
FiledJanuary 23, 1984
GrantedNovember 3, 1992
Term endedNovember 3, 2009
Patent numberCA 1309672 C
Classification (IPC)C07H21/00 +2 more

Timeline

Timeline From CIPO dates

198519881991199419972000200320062009Application filedJan 23, 1984Patent grantedNov 3, 1992Term endedNov 3, 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.