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Expired Canadian patentCanada

Apparatus for electrical stimulation of the body

CA 2317232 C · Owner: Bournemouth University Higher Education Corporation · Inventors: Swain, Ian Douglas; Taylor, Paul Nicholas

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

A functional electrical stimulator for attachment to a leg e.g. in a patient with , drop foot is provided. It comprises: first and second electrodes for attachment to the leg , to apply an electrical stimulus; a foot switch for sensing foot rise or foot strike, said , foot switch comprising a force-sensitive resistor; a circuit responsive to said foot switch , for generating stimulation pulses; and means forming part of said circuit for responding , to changes in the resistance characteristics of said foot switch by adjusting a , corresponding response threshold of said circuit. The invention also provides a , two-channel stimulator that offers various possibilities for controlling …

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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 September 1, 2000 and granted March 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 1, 2020.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 1, 2022.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 1, 2000
GrantedMarch 15, 2011
Term endedSeptember 1, 2020
Patent numberCA 2317232 C
Classification (IPC)A61N1/08 +1 more

Timeline

Timeline From CIPO dates

2001200320052007200920112013201520172019Application filedSep 1, 2000Patent grantedMarch 15, 2011Term endedSep 1, 2020

Sources & verification

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