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Expired Canadian patentCanada

Electroluminescent panel and method of manufacturing the same

CA 1325468 C · Owner: Hasegawa, Kazuhiro · Inventors: Kondo, Fumio; Mori, Kiju; Kagawa, Mitsuru

CIPO record

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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 electroluminescent panel and a method of manufacturing the same which comprises the steps of: forming a roll of luminous base film made of phosphors embedded in insulating material, the luminous base film being laminated upon a conductive film; forming a roll of a transparent conductive film; passing the luminous base film and transparent conductive film between a pair of rollers while sandwiching a power supply bus bar made of a metal film therebetween to, thereby make the luminous film, transparent conductive film and power supply bus bar in an integrated body by means of pressurized heating; cutting the integrated body into a piece having a predetermined length; and mounting 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 December 21, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 21, 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.
FiledSeptember 1, 1989
GrantedDecember 21, 1993
Term endedDecember 21, 2010
Patent numberCA 1325468 C
Classification (IPC)H05B33/10

Timeline

Timeline From CIPO dates

1990199319961999200220052008Application filedSep 1, 1989Patent grantedDec 21, 1993Term endedDec 21, 2010

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