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Expired Canadian patentCanada

Bacillus thuringiensis transformation

CA 1339734 C · Owner: Ciba-Geigy Ag · Inventors: Geiser, Martin; Schurter, Walter; Mathe, Daniel

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Abstract From the Canadian patent

The present invention describes a process that for the first time renders possible a direct and targeted genetic manipulation of Bacillus thuringiensis and the closely related B. cereus using recombinant DNA technology. The invention comprises a process for inserting and cloning DNA sequences in gram positive bacteria selected from the group consisting of Bacillus thuringiensis and Bacillus cereus comprising: (a), isolating the DNA to be introduced; (b) cloning the thus isolated DNA in a cloning vector that is capable of replicating in a bacterial host cell selected from the group consisting of Bacillus thuringiensis and Bacillus cereus cells in a heterologous cloning system; (c) directly …

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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 17, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2015.
  • 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 18, 1989
GrantedMarch 17, 1998
Term endedMarch 17, 2015
Patent numberCA 1339734 C
Classification (IPC)C12N15/75 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedMay 18, 1989Patent grantedMarch 17, 1998Term endedMarch 17, 2015

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