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Expired Canadian patentCanada

Substrate for a sintered electrode

CA 2117231 C · Owner: Medtronic, Inc. · Inventors: Gates, James T.

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 substrate for use in a pacing lead having a sintered porous platinized steroid eluting electrode. The substrate has at least one raised surface which provides an advantageous mounting portion for the sintered electrode. In the preferred embodiment the mounting portion is nailheadshaped. The present invention provides an electrode produced with increased dimensional consistency mechanical, strength and impedance as compared to electrodes having a straight wire substrate. Also disclosed is a method of manufacturing such an electrode.

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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 March 8, 1994 and granted October 7, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 8, 2014.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 8, 2016.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMarch 8, 1994
GrantedOctober 7, 2003
Term endedMarch 8, 2014
Patent numberCA 2117231 C
Classification (IPC)A61N1/05

Timeline

Timeline From CIPO dates

1995199719992001200320052007200920112013Application filedMarch 8, 1994Patent grantedOct 7, 2003Term endedMarch 8, 2014

Sources & verification

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