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Expired Canadian patentCanada

Multilayer structure for carrying on the assembly of a generator, process for creating said structure and for constructing a complete generator, and generator obtained by said process

CA 1340407 C · Owner: Societe Nationale Elf Aquitaine · Inventors: Muller, Daniel; Kapfer, Bruno; Gauthier, Michel

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Abstract From the Canadian patent

For producing electrochemical solid polymer electrolyte lithium generators in the form of thin films multilayer structures are formed from two-layer solid polymer electrolyte/positive electrodes composite subsets which are subsequently linked to other constituent layers of the generator such that the multilayer structure obtained comprises a layer of low ductility metal. From the multilayer structures generators using stacking, winding or folding techniques may be produced.",

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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 February 23, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 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.
FiledJune 17, 1988
GrantedFebruary 23, 1999
Term endedFebruary 23, 2016
Patent numberCA 1340407 C
Classification (IPC)H01M6/18 +1 more

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