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Expired Canadian patentCanada

Device for amplifying the current of an abnormal electrical discharge and system for using an abnormal electrical discharge comprising one such device

CA 2418922 C · Owner: Heau, Christophe · Inventors: Heau, Christophe; Terrat, Jean-Paul

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 device (1) for amplifying the current of an abnormal electrical discharge characterized in that it comprises an electrode which is positively polarized (2) and associated with a magnetic circuit (3) producing a magnetic field (4) which is uniformly divergent whereby the intensity on the surface of said electrode is more than approximately 6.10?-2¿ Tesla said electrode being positioned in the region where the magnetic field is at its most intense.

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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 June 10, 2002 and granted May 31, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 10, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 10, 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.
FiledJune 10, 2002
GrantedMay 31, 2011
Term endedJune 10, 2022
Patent numberCA 2418922 C
Classification (IPC)H01J37/34

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJune 10, 2002Patent grantedMay 31, 2011Term endedJune 10, 2022

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