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Expired Canadian patentCanada

Hollow fiber type oxygenator

CA 1254467 A · Owner: Terumo Kabushiki Kaisha Trading As Terumo Corporation · Inventors: Deguchi, Hiromi; Nagayama, Kiyotaka

CIPO record

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

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Abstract From the Canadian patent

In a hollow fiber type oxygenator comprising a housing a bundle of a plurality of hollow fibers axially extending through the housing and each presenting a gas-exchange membrane, partitions engaged in the housing at its opposite end portions and retaining the opposite ends of the hollow fibers without blocking the opening of the fibers a gas, inlet and a gas outlet both in fluid communication with the interior space of the hollow fibers, a blood chamber defined by the partitions, the outer surface of the hollow fibers, and the inner surface of the housing and a blood, inlet and a blood outlet located in the housing wall in fluid communication with the blood chamber the bundle of, the hollow …

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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

  • Granted May 23, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 23, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJuly 4, 1985
GrantedMay 23, 1989
Term endedMay 23, 2006
Patent numberCA 1254467 A
Classification (IPC)A61M1/14

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJuly 4, 1985Patent grantedMay 23, 1989Term endedMay 23, 2006

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