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Expired Canadian patentCanada

Bakers' yeast

CA 2012090 C · Owner: Asahi Kasei Kogyo Kabushiki Kaisha · Inventors: Nakagawa, Nobuaki; Takano, Hiroyuki; Hino, Akihiro

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A diploid hybrid bakers' yeast belonging to Saccharomyces cerevisiae having at least strong fermentative ability of non-sugar bread dough and strong freeze-resistance and frozen bread dough containing the same are provided.

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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 March 13, 1990 and granted March 25, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 13, 1990
GrantedMarch 25, 1997
Term endedMarch 13, 2010
Patent numberCA 2012090 C
Classification (IPC)C12N1/18 +2 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedMarch 13, 1990Patent grantedMarch 25, 1997Term endedMarch 13, 2010

Sources & verification

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