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Expired Canadian patentCanada

Systems and methods for low-temperature gas separation

CA 2520800 C · Owner: Feygin, Vladimir Isaakovich · Inventors: Feygin, Vladimir Isaakovich; Alferov, Vadim Ivanovich; Imaev, Salavat Zainetdinovich

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Abstract From the Canadian patent

One of the drawbacks common to many currently available low-temperature gas mixture separation techniques is that known systems and methods that embody the techniques are inefficient. In contrast to known systems and methods for low-temperature gas mixture separation some embodiments of the present invention provide a system for low-temperature gas mixture separation that recycles energy and reduces power consumption by re-circulating heated and/or cooled flows (e.g. gas liquid and mixed-phase flows) within the system. Accordingly in some embodiments efficiency is somewhat improved as compared to comparable systems that do not include the re-circulation of heat energy. In some embodiments …

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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 23, 2005 and granted August 19, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 23, 2025.
  • 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 23, 2005
GrantedAugust 19, 2014
Term endedSeptember 23, 2025
Patent numberCA 2520800 C
Classification (IPC)F25J3/02

Timeline

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2006200820102012201420162018202020222024Application filedSep 23, 2005Patent grantedAug 19, 2014Term endedSep 23, 2025

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