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Expired Canadian patentCanada

High methionine content pichia pastoris yeasts

CA 1183475 A · Owner: Burns Philp Food Inc. · Inventors: Wegner, Eugene H.; Shay, Lucas K.

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

Mutant yeasts of the strain Pichia pastoris have been developed which contain relatively high levels of methionine. These high methionine content Pichia pastoris mutants grow on an oxygenated hydrocarbon such as methanol, to produce improved amino acid balance single-cell protein product eliminating or reducing the need supplement single-cell protein with methionine when used as food supplements.

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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 5, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 5, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 6, 1982
GrantedMarch 5, 1985
Term endedMarch 5, 2002
Patent numberCA 1183475 A
Classification (IPC)C12P21/00 +2 more

Timeline

Timeline From CIPO dates

1983198519871989199119931995199719992001Application filedAug 6, 1982Patent grantedMarch 5, 1985Term endedMarch 5, 2002

Sources & verification

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