Display system
CA 2242806 A1 · Owner: Eaton Corporation · Inventors: Helstern, Robert Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A display system includes a plurality of color filters disposed between a plurality of light sources and a display panel. A first light source is energizeable to transmit light through a first color filter to illuminate the display panel with a first color (red). A second light source is energizeable to transmit light through a second color filter to illuminate the display panel with a second color (green). The first and second light sources are simultaneously energizeable to transmit light through both of the color filters to illuminate the display panel with a third color (yellow). The display panel includes inner and outer layers containing light absorbing pigment and light scattering …
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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 August 27, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 27, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 27, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.