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Expired Canadian patentCanada

Superconducting power cable with enhanced superconducting core

CA 2408896 C · Owner: Maya, Mendez Mauro E. · Inventors: Perez, Sanchez Alfonso; Maya, Mendez Mauro E.; Nieto, Sanchez Jose Luis

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

20 Enhanced superconducting power cable of at least one phase characterized by two tubular sections, the first section being a flexible superconducting core with a stainless steel tape mesh and copper tape layers overlaid at an angle of 0° to 45° followed by two or more superconducting material layers placed overlaid and a second application of two or more superconducting material layers in opposite direction with regard to the previous ones; the second tubular section is an annular space of vacuum thermal insulation formed by a flexible corrugated pipe covered with multilayer insulations including also a pipe with a stainless steel mesh to adhere an internal semiconducting shield made 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 October 18, 2002 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 18, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 18, 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.
FiledOctober 18, 2002
GrantedApril 3, 2012
Term endedOctober 18, 2022
Patent numberCA 2408896 C
Classification (IPC)H01B12/02 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedOct 18, 2002Patent grantedApril 3, 2012Term endedOct 18, 2022

Sources & verification

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