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Expired Canadian patentCanada

Method for culturing microorganism, method for biosynthesizing organic compound, method for maintaining microbial ability to decompose polluting substance, method for decomposing pollutant, and method for remedying environment

CA 2229754 C · Owner: Canon Kabushiki Kaisha · Inventors: Yano, Tetsuya; Yamada, Yasutsugu; Kozaki, Shinya

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

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Abstract From the Canadian patent

A method for culturing a microorganism in a culture medium containing a carbon source being metabolizable by the microorganism and an electrolyzed water obtained by electrolysis of water in an electrolytic cell. A method of a production of an organic compound by a microorganism characterized in the use of an electrolyzed water obtained by electrolysis of water in an electrolytic cell. A method for maintaining the pollutant-decomposing ability of a microorganism characterized in the use of an electrolyzed water obtained by electrolysis of water in an electrolytic cell. A method for decomposing a pollutant by means of a microorganism characterized in the use of an electrolyzed water obtained …

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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 February 16, 1998 and granted April 9, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 16, 2018.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 16, 2020.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 16, 1998
GrantedApril 9, 2002
Term endedFebruary 16, 2018
Patent numberCA 2229754 C
Classification (IPC)C12N1/20 +2 more

Timeline

Timeline From CIPO dates

1999200120032005200720092011201320152017Application filedFeb 16, 1998Patent grantedApril 9, 2002Term endedFeb 16, 2018

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