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Expired Canadian patentCanada

Electroconductive composition and process of preparation

CA 1340670 C · Owner: Linton, Howard Richard · Inventors: Linton, Howard Richard

CIPO record

Overview

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

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Abstract From the Canadian patent

An electroconductive composition comprising a two-dimensional network of antimony-containing tin oxide crystallites in association with amorphous silica, the composition according to one aspect of the invention comprising a powder of submicron to tens of micron size particles capable of forming a conductive network within a carrier matrix, such as a thin film matrix, and a process for preparing the composition.

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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 July 20, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 20, 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.
FiledSeptember 15, 1989
GrantedJuly 20, 1999
Term endedJuly 20, 2016
Patent numberCA 1340670 C
Classification (IPC)H01B1/08 +2 more

Timeline

Timeline From CIPO dates

199019931996199920022005200820112014Application filedSep 15, 1989Patent grantedJuly 20, 1999Term endedJuly 20, 2016

Sources & verification

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