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Expired Canadian patentCanada

Method for isolating herpes virus thymidine kinase-encoding dna

CA 1340473 C · Owner: The Upjohn Company · Inventors: Compton, Teresa; Petrovskis, A. Erik; Post, E. Leonard

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Abstract From the Canadian patent

Methods for isolating thymidine kinase-encoding DNA of a herpes virus are described. These methods utilize degenerate primers based on regions of relatively conserved amino acid sequence in herpes virus thymidine kinase proteins to initiate a polymerase chain reaction which yields large amounts of the thymidine kinase-encoding DNA. The methods are illustrated in the isolation of the thymidine kinase gene of feline herpes virus, which can be used to construct recombinant thymidine kinase-negative feline herpes viruses for purposes of constructing live vaccines and expression vectors. In addition, the regulatory elements of the feline herpes virus thymidine kinase gene are useful in 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 March 30, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 8, 1989
GrantedMarch 30, 1999
Term endedMarch 30, 2016
Patent numberCA 1340473 C
Classification (IPC)C12N15/54 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedAug 8, 1989Patent grantedMarch 30, 1999Term endedMarch 30, 2016

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