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Expired Canadian patentCanada

Method for transforming indica rice

CA 2240454 C · Owner: Hiei, Yukoh · Inventors: Hiei, Yukoh

CIPO record

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Abstract From the Canadian patent

A method by which Indica rice can be efficiently transformed. In this method immature Indica rice germ cells are transformed by the Agrobacterium method and the resultant transformants are screened with the use of media containing 2,000 to 4,000 mg/l of KNO3 60 to, 200 mg/l of MgSO4, 200 to 600 mg/l of KH2 PO4 100 to 450 mg/l of CaCl2, 200 , to 600 mg/l of (NH4)2 SO4 1 to 7 mg/l of H3BO3, 2 to 20, mg/l of MnSO4 20 to 50 mg/l of EDTA or its salt, 3 to 8 mg/l of Fe 50 to 200 , mg/l of myoinositol, 0.5 to 10 mg/l of 2,4dichloropheoxyacetic acid, 0.01 to 5 mg/l of cytokinins 5,000 to 80,000 mg/l , of saccharides and gelling agents and having a pH value of 4.5 to 6.5.

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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

  • Filed October 22, 1997 and granted June 3, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 22, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 22, 2019.
  • 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, 1997
GrantedJune 3, 2003
Term endedOctober 22, 2017
Patent numberCA 2240454 C
Classification (IPC)C12N15/84 +2 more

Timeline

Timeline From CIPO dates

1998200020022004200620082010201220142016Application filedOct 22, 1997Patent grantedJune 3, 2003Term endedOct 22, 2017

Sources & verification

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