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Expired Canadian patentCanada

Production of biologically active forms of csf using a baculovirus (acnpv)-insect cell expression system

CA 1317244 C · Owner: O'Rourke, Edwin C. · Inventors: O'Rourke, Edwin C.; Martin, George; Clark, Robin

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Abstract From the Canadian patent

The expression of biologically active CSFs in insect cells (Spodoptera frugiperda) is disclosed. Numerous forms of CSF-1 are expressed and secreted as biologically active dimers. DNA transfer vectors and expression vectors that encode forms of CSF-1 and allow for their expression are disclosed and claimed. G-CSF is additionally expressed in insect cells in active form. DNA transfer vectors and expression vectors that encode G-CSF are disclosed and claimed.

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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 May 4, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 4, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 20, 1988
GrantedMay 4, 1993
Term endedMay 4, 2010
Patent numberCA 1317244 C
Classification (IPC)C12N15/86 +2 more

Timeline

Timeline From CIPO dates

19891992199519982001200420072010Application filedJuly 20, 1988Patent grantedMay 4, 1993Term endedMay 4, 2010

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