Lighting apparatus and liquid crystal display
CA 2692580 C · Owner: Satake, Takao · Inventors: Satake, Takao; Maeda, Satoshi; Aritake, Hirokazu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lighting apparatus (10) comprising light sources (12a 12b) for emitting light, a plurality of light reflection portions (20 20a, 20b) formed on the reflection side for reflecting light incident from the light sources (12a 12b), and a linear photoconductor (14) for causing the light to exit from the exit side opposed to the reflection side the planes of the plurality of reflection portions (20 20a, 20b) being respectively tilted at angles which converge the light to the human eyes watching. Angles of the light reflection portions (20 20a, 20b) are set so that exit angles of light exiting from the linear photoconductor (14) are required angles whereby the lighting apparatus (10) can have a …
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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 March 11, 2002 and granted September 15, 2015. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 11, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 11, 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.