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Expired Canadian patentCanada

Pretreatment process in flour milling method

CA 2203950 C · Owner: Tokui, Yoshihiro · Inventors: Tokui, Yoshihiro; Kanemoto, Shigeharu; Matsumoto, Nobuhiro

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Abstract From the Canadian patent

A pretreatment process in a flour milling method in which raw wheat grains are first polished and the polished grains are ground and milled for producing end flour includes a, first polishing step, a second polishing step a third, polishing step, and a step of adding water. In the first polishing step a pericarp of each wheat grain is removed in the second polishing step a seed coat of each raw wheat grain is removed, in the third polishing step a part of cell walls of aleuron layer cells that was in contact with the removed seed coat is removed so that a cell membrane of the aleuron layer cell is caused to be ruptured and that a substance in the aleuron layer cell is caused to be in a …

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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 April 29, 1997 and granted January 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 29, 2017.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 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.
FiledApril 29, 1997
GrantedJanuary 8, 2002
Term endedApril 29, 2017
Patent numberCA 2203950 C
Classification (IPC)B02B3/00 +1 more

Timeline

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1998200020022004200620082010201220142016Application filedApril 29, 1997Patent grantedJan 8, 2002Term endedApril 29, 2017

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