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Expired Canadian patentCanada

Methods and media for enhanced somatic embryogenesis

CA 1292959 C · Owner: Plant Genetics, Inc. · Inventors: Strickland, Steven G.; Stuart, David A.

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Abstract From the Canadian patent

Improved Methods and Media, for Enhanced Somatic Embryogenesis Methods and media are provided to improve the quantity and quality of the embryos obtained by induction of somatic plant tissue. Media provide for the addition of an amount of selected amino acids sufficient to increase the number of somatic embryos generated. The invention further provides for such media including sources of ammonium ion and methods for the culturing of plant somatic tissue.

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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 December 10, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 10, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 22, 1986
GrantedDecember 10, 1991
Term endedDecember 10, 2008
Patent numberCA 1292959 C
Classification (IPC)C12N5/14 +1 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedOct 22, 1986Patent grantedDec 10, 1991Term endedDec 10, 2008

Sources & verification

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