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Expired Canadian patentCanada

Method and device for manipulating color in a display

CA 2580794 C · Owner: Cummings, William J. · Inventors: Gally, Brian J.; Cummings, William J.

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Abstract From the Canadian patent

A method and device for manipulating color in a display includes a display in which one or more of the pixels includes one or more display elements such as , interferometric modulators, configured to output colored light and one or more display elements configured to output white light. Other embodiments include methods of making such displays. In addition embodiments include color , displays configured to provide a greater proportion of the intensity of output light in green portions of the visible spectrum in order to increase perceived brightness of the display.

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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

  • Filed September 14, 2005 and granted June 25, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 14, 2025.
  • Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
  • 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 14, 2005
GrantedJune 25, 2013
Term endedSeptember 14, 2025
Patent numberCA 2580794 C
Classification (IPC)G02B26/00 +2 more

Timeline

Timeline From CIPO dates

2006200820102012201420162018202020222024Application filedSep 14, 2005Patent grantedJune 25, 2013Term endedSep 14, 2025

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