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Expired Canadian patentCanada

Method for making electrically conductive textile materials

CA 1315494 C · Owner: Kimbrell, William Carl, Jr. · Inventors: Kimbrell, William Carl, Jr.; Kuhn, Hans Heinrich

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

Fabrics are made electrically conductive by contacting the fiber under agitation conditions with an aqueous solution of an aniline compound oxidizing agent and a doping agent or counter ion and then depositing onto the surface of individual fibers of the fabric a prepolymer of the aniline compound so as to uniformly and coherently cover the fibers with a conductive film of the polymerized aniline compound and wherein furthermore, the oxidizing agent is a vanadyl compound whereby the reaction rate is controlled such that the prepolymer is uniformly and coherently adsorbed onto the surface of the textile material thereby providing, improved films of electrically conductive polymerized …

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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

  • Granted April 6, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 6, 2010.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledMay 5, 1989
GrantedApril 6, 1993
Term endedApril 6, 2010
Patent numberCA 1315494 C
Classification (IPC)H01B1/12 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedMay 5, 1989Patent grantedApril 6, 1993Term endedApril 6, 2010

Sources & verification

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