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Expired Canadian patentCanada

Chimeric plasmids that replicate in bacteria and yeast and microorganisms transformed therewith

CA 1205027 A · Owner: Cetus Corporation · Inventors: Chang, Shing; Meade, James H.

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Abstract From the Canadian patent

Abstract of the Invention, Chimeric plasmids capable of transforming bacteria and yeast are described. The plasmids carry the Cm (chloramphenicol resistance) gene and the Tc (tetracycline resistance) gene as selectable markers. The Cm gene allows the plasmids to be selected for in wildtype strains of yeast, including Saccharomyces cerevisiae. The Tc gene allows heterologous genes cloned into the plasmids to be selected for in bacteria, including Escherichia coli.

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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 27, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 27, 2003.
  • 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, 1984
GrantedMay 27, 1986
Term endedMay 27, 2003
Patent numberCA 1205027 A
Classification (IPC)C12N15/00 +2 more

Timeline

Timeline From CIPO dates

1985198719891991199319951997199920012003Application filedJune 13, 1984Patent grantedMay 27, 1986Term endedMay 27, 2003

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