Reflective image-providing display viewed with holographically diffused ambient light
CA 2195862 C · Owner: Wenyon, Michael M. · Inventors: Wenyon, Michael M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Reflective image-providing displays viewed with holographically diffused light are provided. As one particular and preferred embodiment a liquid crystal , display component is presented comprising a liquid crystal display element (200) backed with a reflective transmission holographic diffuser (100). Images of good contrast may be displayed and viewed from the liquid cyrstal display compoonent under ambient lighting conditions and without further requirement of supplemental light sources, such as edge-lighting and backlighting.
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 May 14, 1996 and granted October 3, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 14, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 14, 2018.
- 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.