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Expired Canadian patentCanada

Method of recovering carbon dioxide from exhaust gas and apparatus therefor

CA 2664454 C · Owner: Yamamoto, Yoshitaka · Inventors: Takano, Osamu; Tanaka, Susumu; Kawamura, Taro

CIPO record

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Abstract From the Canadian patent

Provided is a method including the steps of: cooling exhaust gas to a given temperature by use of cold energy of liquefied natural gas; spraying water in a minute-ice generator having been cooled to a given temperature by use of the cold energy of the liquefied natural gas to generate minute ice; and introducing the minute ice and the cooled exhaust gas into a gas hydrate generator so as to cause the minute ice and carbon dioxide in the exhaust gas to react with each other in the gas hydrate generator, thereby generating carbon dioxide hydrate.

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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 September 29, 2006 and granted May 8, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 29, 2026.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 29, 2006
GrantedMay 8, 2012
Term endedSeptember 29, 2026
Patent numberCA 2664454 C
Classification (IPC)B01D53/62 +1 more

Timeline

Timeline From CIPO dates

2007200920112013201520172019202120232025Application filedSep 29, 2006Patent grantedMay 8, 2012Term endedSep 29, 2026

Sources & verification

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