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Expired Canadian patentCanada

Immobilization of nucleic acids on derivatized nylon supports

CA 1288709 C · Owner: Carrico, Robert J. · Inventors: Carrico, Robert J.; Patterson, William L.

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Abstract From the Canadian patent

Immobilization of nucleic acids e.g. DNA and, RNA, by contact with a solid support comprising nylon having amide groups that have been derivatized to amidine residues. Derivatization of the nylon support can be accomplished by treatment with an alkylating agent such as a trialkyloxonium salt under anhydrous conditions followed by reaction with an amine. The immobilized nucleic acid is particularly useful as an immobilized probe in hybridization assays to detect specific polynucleotide sequences in a test sample. MS-1422

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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 September 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 10, 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.
FiledJune 13, 1986
GrantedSeptember 10, 1991
Term endedSeptember 10, 2008
Patent numberCA 1288709 C
Classification (IPC)C07H21/00 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedJune 13, 1986Patent grantedSep 10, 1991Term endedSep 10, 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.