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Expired Canadian patentCanada

Rigidly mounted bubble type blood oxygenator having flexible flow channels

CA 1054473 A · Owner: Baxter Travenol Laboratories · Inventors: Leonard, Ronald J.

CIPO record

Overview

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

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Abstract From the Canadian patent

Ronald J. Leonard ABSTRACT OF THE DISCLOSURE, A bubble-type blood oxygenator is disclosed which comprises a flexible envelope having a blood flow passage with a blood oxygenating portion and a blood defoaming portion. A stiff backing carries the oxygenator in flat, stretched-out configuration with the result that the flow passage, when filled with blood and oxygen, exhibits reduced outward distension and sagging.

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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 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedMay 15, 1979
Term endedMay 15, 1996
Patent numberCA 1054473 A
Classification (IPC)A61M5/00 +1 more

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedMay 15, 1979Term endedMay 15, 1996

Sources & verification

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