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Expired Canadian patentCanada

Method of routing electrical current to bodily tissues via implanted passive conductors

CA 2553901 C · Owner: 2249020 Alberta Inc. · Inventors: Prochazka, Arthur

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

The invention provides an implant for electrically stimulating a target body tissue in a subject. The implant provides a conductive pathway for a portion of electrical current flowing between surface electrodes positioned on the subject's skin and transmits that current to the target body tissue. The implant has an electrical conductor of sufficient length to extend from subcutaneous tissue located below a surface cathodic electrode to the target body tissue. The conductor has a pick-up end which forms an electrical termination having a sufficient surface area to allow a sufficient portion of the electrical current to flow through the conductor in preference to flowing , through …

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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 January 24, 2005 and granted January 20, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2025.
  • 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.
FiledJanuary 24, 2005
GrantedJanuary 20, 2015
Term endedJanuary 24, 2025
Patent numberCA 2553901 C
Classification (IPC)A61N1/36 +1 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedJan 24, 2005Patent grantedJan 20, 2015Term endedJan 24, 2025

Sources & verification

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