Color selectable liquid crystal display system
CA 1270583 C · Owner: Ford Motor Company · Inventors: Porter, Frederick J.; Pidsosny, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the Invention, A system in which several colors of the spectrum are selectable to be displayed having common polarity and with high contract against a black background utilizing, liquid crystal cells along with linear and color polarizers disposed along an optical axis to that comparable results in either reflective or transmissive modes are achieved, with appropriate light sources.
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
- Granted June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
- 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.