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Expired Canadian patentCanada

Electroluminescent panel having a power lead directly affixed to a transparent electrode

CA 1290004 C · Owner: Simopoulos, George N. · Inventors: Simopoulos, Gregory N.; Simopoulos, George N.; Simopoulos, Nicholas T.

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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 method of making the same includes a plurality of layers on a transparent electrode in which each layer is formed with the same compatible polymer carrier resin base material so that the individual layers have an integrated uniformity. A polyester laminating resin is disclosed for the resin base material of each layer which is activated by a small amount of diisocyanate sufficent to provide temperature stability, but insuffient to transform the base material into a urethane. Also disclosed is an electroluminescent lamp which emits light only in discrete areas such as to produce a pattern of light in which the phosphor is applied in a pattern corresponding to …

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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 1, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 1, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 13, 1987
GrantedOctober 1, 1991
Term endedOctober 1, 2008
Patent numberCA 1290004 C
Classification (IPC)H05B33/06 +2 more

Timeline

Timeline From CIPO dates

1988199119941997200020032006Application filedApril 13, 1987Patent grantedOct 1, 1991Term endedOct 1, 2008

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