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Expired Canadian patentCanada

Porous carbonaceous electrodes with embedded active material

CA 1065398 A · Owner: The Government Of The United States As Represented By The United Statedepartment Of Energy · Inventors: Kaun, Thomas D.

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Abstract From the Canadian patent

Positive and negative electrodes are provided as rigid porous carbonaceous matrices with particulate active material fixedly embedded. Active material such as metal chalcogenides, solid alloys of alkali metals or alkali earth metals along with other metals and their oxides in particulate form are blended with a thermosetting resin and a solid volatile to form a paste mixture. Various electrically conductive powders or current collector structures can be blended or embedded into the paste mixture which can be molded to the desired electrode shape. The molded paste is heated to a temperature at which the volatile transforms into vapor to impart porosity as the resin begins to cure into a …

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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 October 30, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 30, 1996.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedOctober 30, 1979
Term endedOctober 30, 1996
Patent numberCA 1065398 A
Classification (IPC)H01M10/39

Timeline

Timeline From CIPO dates

198019821984198619881990199219941996Patent grantedOct 30, 1979Term endedOct 30, 1996

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