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Expired Canadian patentCanada

Conductive primer compositions and methods

CA 1307367 C · Owner: Lo, Salvador R. · Inventors: Lo, Salvador R.

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Abstract From the Canadian patent

The present invention is directed to improved conductive primer compositions and methods. In the improved methods aspect of the present invention, a non-conductive polymeric component is precoated with a primer to render it electroconductive in preparation for electrocoating. Next the primed, polymeric component is assembled with a conductive metallic component to form a multi-material workpiece. Finally, the formed workpiece is submerged in an electrocoat bath for simultaneously electrocoating both the primed polymeric component and the conductive metallic component. In some preferred embodiments, the workpiece may be an automobile chassis. In the improved electroconductive primer …

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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 September 8, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 8, 2009.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 23, 1986
GrantedSeptember 8, 1992
Term endedSeptember 8, 2009
Patent numberCA 1307367 C
Classification (IPC)C08L63/00 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedDec 23, 1986Patent grantedSep 8, 1992Term endedSep 8, 2009

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