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Expired Canadian patentCanada

Production of rapeseed protein materials

CA 1311877 C · Owner: The University Of Toronto Innovations Foundation · Inventors: Diosady, Levente L.; Rubin, Leon J.; Tzeng, Yew-Min

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Abstract From the Canadian patent

A process of treating meal containing vegetable proteins is disclosed. This process includes the step of extracting the meal with a suitable aqueous solvent in which the vegetable proteins are soluble to obtain an extraction solution. The solubility of the dissolved protein in the extraction solution is then adjusted to precipitate at least some of the protein and therefore obtain a precipitated protein fraction and an unprecipitated protein fraction in solution. The precipitated protein fraction is then separated from the protein fraction in solution, and the unprecipitated protein fraction is separated from the undesirable components in the solution by membrane processing. Each of the …

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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 22, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 22, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 15, 1988
GrantedDecember 22, 1992
Term endedDecember 22, 2009
Patent numberCA 1311877 C
Classification (IPC)A23J1/14

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedApril 15, 1988Patent grantedDec 22, 1992Term endedDec 22, 2009

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