Night vision goggle compatible liquid crystal display device
CA 2101907 A1 · Owner: Abileah, Adiel · Inventors: Abileah, Adiel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A full color, night vision goggle compatible liquid crystal display device achieves uniform illumination and color integrity at wide viewing angles by creating collimated, uniform light in a backlight assembly before the light reaches an IR filter having a sharp cutoff between near IR and red, and thereafter diffusing the light which is emitted from the filter to create the desired wide viewing angle.
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 August 4, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 4, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2015.
- 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.