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Expired Canadian patentCanada

Secondary battery and method of manufacturing the same

CA 1294670 C · Owner: Akuto, Keiji · Inventors: Akuto, Keiji

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

A secondary battery has positive and negative electrode members juxtaposed on a substantially identical plane. End faces of the positive and negative electrode members oppose each other at a distance. A substrate fixes and supports the positive and negative electrode members. A cover member defines with the, substrate, a sealed chamber including the positive and negative electrode members. An electrolyte is sealed in the sealed chamber. The battery can be manufactured a through deposition of electrode materials.

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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 January 21, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 21, 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.
FiledAugust 5, 1988
GrantedJanuary 21, 1992
Term endedJanuary 21, 2009
Patent numberCA 1294670 C
Classification (IPC)H01M10/04 +2 more

Timeline

Timeline From CIPO dates

1989199219951998200120042007Application filedAug 5, 1988Patent grantedJan 21, 1992Term endedJan 21, 2009

Sources & verification

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