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Expired Canadian patentCanada

Superconducting multilayer electrode and method of producing same

CA 2172656 C · Owner: Ise, Tomoyuki · Inventors: Hidaka, Seiji; Ishikawa, Yohei; Matsui, Norihumi

CIPO record

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Abstract From the Canadian patent

A superconductor layer is formed on one side of a dielectric substrate, and with this superconductor layer as a conductor layer of the bottommost layer superconductor layers and dielectric layers are alternately laminated with each other. Thus a, superconducting multilayer electrode is provided which is laminated with at least one TEM mode transmission line which is constituted of a pair of superconductor layers with a dielectric layer sandwiched in between and the, superconductor layer and the dielectric layer have film thicknesses which are set so that the maximum value of the current density flowing through each superconductor layer becomes the same. The resistance to electric power of …

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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 26, 1996 and granted March 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2016.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2018.
  • 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 26, 1996
GrantedMarch 13, 2001
Term endedMarch 26, 2016
Patent numberCA 2172656 C
Classification (IPC)H01B12/06 +2 more

Timeline

Timeline From CIPO dates

1997199920012003200520072009201120132015Application filedMarch 26, 1996Patent grantedMarch 13, 2001Term endedMarch 26, 2016

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