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Expired Canadian patentCanada

Biological containment

CA 1315224 C · Owner: Klemm, Per · Inventors: Gerdes, Kenn Axo; Andersson, Poul Kirketerp; Klemm, Per

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A replicon, in which a nucleotide sequence encoding a cell killing function is regulatably expressed when the replicon is harboured in one type of host cell (primary host cell) so, that cells harbouring the replicon are killed under conditions under which the cell killing function is expressed and the, nucleotide sequence encoding the cell killing function is regulatably or constitutively expressed when the replicon is harboured in another type of host cell (secondary host cell) so, that cells harbouring the replicon are invariably killed or killed under conditions under which the cell killing function is expressed, may be used in a method of active biological containment of cells under …

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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, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 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.
FiledMarch 26, 1987
GrantedMarch 30, 1993
Term endedMarch 30, 2010
Patent numberCA 1315224 C
Classification (IPC)C12N15/09 +2 more

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedMarch 26, 1987Patent grantedMarch 30, 1993Term endedMarch 30, 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.