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Expired Canadian patentCanada

Apparatus for electrotherapy

CA 2487707 C · Owner: Physiomed Elektromedizin Ag · Inventors: Reinhold, Walter

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

In an apparatus for electrotherapy, comprising a circuit arrangement with a terminal for generation of a sequence of voltage pulses and two electrodes for application of these voltage pulses to a part of the body that is to be treated; one of the two electrodes having a surface of comparatively high transition resistance and the other electrode having comparatively low transition resistance towards human skin; the electrode with the surface of high transition resistance being movable over the treated part of the body and the surface being a plastic film; with sequences of pulses of voltages from 1 to 600 V being generated and a current in a microampere range being produced in the tissue; it …

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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 November 2, 2004 and granted June 11, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 2, 2024.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 2, 2004
GrantedJune 11, 2013
Term endedNovember 2, 2024
Patent numberCA 2487707 C
Classification (IPC)A61N1/32 +1 more

Timeline

Timeline From CIPO dates

2005200720092011201320152017201920212023Application filedNov 2, 2004Patent grantedJune 11, 2013Term endedNov 2, 2024

Sources & verification

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