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Expired Canadian patentCanada

Cryogenic cooling system for rotor having a high temperature super-conducting field winding

CA 2384578 C · Owner: Laskaris, Evangelos Trifon · Inventors: Laskaris, Evangelos Trifon

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

A cooling fluid system is disclosed for providing cryogenic cooling fluid to a high temperature super-conducting rotor comprising: a cryogen storage tank storing a liquid cryogenic cooling fluid; an inlet transfer line connecting the storage tank to the rotor and forming a passage for liquid cooling fluid to pass from the tank to the rotor wherein said storage tank is elevated above the rotor and the liquid cooling fluid is gravity fed to the rotor.

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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 May 2, 2002 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 2, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 2, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 2, 2002
GrantedFebruary 5, 2013
Term endedMay 2, 2022
Patent numberCA 2384578 C
Classification (IPC)H02K9/19 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedMay 2, 2002Patent grantedFeb 5, 2013Term endedMay 2, 2022

Sources & verification

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