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Expired Canadian patentCanada

Herbicidal tolerant plants containing gluthathione s-transferase gene

CA 1339629 C · Owner: Helmer, Georgia · Inventors: Chilton, Mary-Dell; Tu, Chen-Pei David; Scarafia, Liliana

CIPO record

Overview

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

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Abstract From the Canadian patent

This invention relates to the use of recombinant DNA tehcnology for the transformation of plants to confer herbicide tolerance to plants. More specifically, the invention concerns the construciton and use of a recombinant DNA molecule that includes a glutathione S-transferase (GST) gene that upon expression in a plant increases the levels of GST enzymatic activity in the plant.

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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 20, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 20, 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 19, 1987
GrantedJanuary 20, 1998
Term endedJanuary 20, 2015
Patent numberCA 1339629 C
Classification (IPC)C12N5/10 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006200920122015Application filedMay 19, 1987Patent grantedJan 20, 1998Term endedJan 20, 2015

Sources & verification

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