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Expired Canadian patentCanada

Encapsulated mouse cells transformed with avian retrovirus-bovine growth hormone dna, and a method for administering bgh in vivo

CA 1294879 C · Owner: Kopchick, John J. · Inventors: Kopchick, John J.; Livelli, Thomas J.; Leung, Frederick C.

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Abstract From the Canadian patent

Recombinant DNA constructs having an avian retroviral long terminal repeat (LTR) ligated to the bovine growth hormone gene, were co-transformed into a mammalian cell (mouse) culture in order to obtain a stable cell culture secreting large amounts of bovine growth hormone. The transformed mouse cells were encapsulated in hollow fibers and implanted into animals, thereby producing circulating bovine growth hormone.

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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 January 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 28, 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.
FiledMay 6, 1985
GrantedJanuary 28, 1992
Term endedJanuary 28, 2009
Patent numberCA 1294879 C
Classification (IPC)C12N15/18 +2 more

Timeline

Timeline From CIPO dates

19861989199219951998200120042007Application filedMay 6, 1985Patent grantedJan 28, 1992Term endedJan 28, 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.