Patent Yard Sign in
Expired Canadian patentCanada

Electroconductive polymer - latex composites

CA 1315431 C · Owner: Mcintyre, John M. · Inventors: Chen, Wuu-Nan; Mcintyre, John M.; Ham, George E.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

Open the CIPO record

Abstract From the Canadian patent

This invention relates to an electrically conductive polymer-latex composite comprising an organic polymeric material dispersed in a latex which is doped to provide an electroconductive polymer-latex composite. The latex effectively serves as a carrier for the polymeric material. A process for preparing the polymer-latex composite comprises mixing ah initially undoped organic material in powder form with a water-based latex, and then spreading and solidifying the mixture. Conductive polymers are generally prepared from backbone polymers, such as polyacetylene which are, made electroconductive by molecular doping of the polymer. Films made from these conductive polymers suffer from several …

Read the whole patent

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 March 30, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 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.
FiledJune 18, 1987
GrantedMarch 30, 1993
Term endedMarch 30, 2010
Patent numberCA 1315431 C
Classification (IPC)H01B1/00

Timeline

Timeline From CIPO dates

19881991199419972000200320062009Application filedJune 18, 1987Patent grantedMarch 30, 1993Term endedMarch 30, 2010

Sources & verification

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