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Expired Canadian patentCanada

Hydrogen-selective metal membrane modules and method of forming the same

CA 2393475 C · Owner: Studebaker, Todd · Inventors: Studebaker, Todd; Pledger, William A.; Edlund, David J.

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Abstract From the Canadian patent

Membrane modules that contain one or more hydrogen-selective membranes methods for preparing the same, and hydrogen purification systems fuel , processors and devices containing the same. In some embodiments the membrane , modules include one or more hydrogen-selective membranes supported on a screen structure, of which a variety of embodiments are disclosed. In some embodiments, the membrane or membranes are adhesively mounted on the screen structure during assembly. In some embodiments the screen structure includes , a plurality of screen members adhesively mounted together during assembly. In some embodiments, the screen structure includes a coating.

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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 22, 2001 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 22, 2021.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 2023.
  • 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 22, 2001
GrantedApril 22, 2003
Term endedMarch 22, 2021
Patent numberCA 2393475 C
Classification (IPC)B01D53/22 +1 more

Timeline

Timeline From CIPO dates

2002200420062008201020122014201620182020Application filedMarch 22, 2001Patent grantedApril 22, 2003Term endedMarch 22, 2021

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