Oled with contrast enhancement features
CA 2411683 A1 · Owner: Wood, Richard P. · Inventors: Johnson, David J.; Wood, Richard P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An organic electroluminescent device is provided having emitting layers with materials, and thicknesses that provide constructive optical interference of emitted light. The, device includes additional layers that provide contrast enhancement through destructive, optical interference of ambient light entering the device.
Read the whole patent
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 November 13, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 13, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 13, 2024.
- 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.