High-intensity red light display device
CA 2016468 C · Owner: Hughes Aircraft Company · Inventors: Schmid, Joseph L.; Wu, Wei-Yu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A display device which is especially suited for application as a center-high-mounted stop-light (CHMSL) or brake light for an automotive vehicle includes a white linear light source. A coupler panel or sheet formed of a fluorescent dye-doped material couples light from one edge therethrough to an opposite edge from the light source to a light receiving edge of a display panel. The coupler panel transmits red light therethrough absorbs other, colors of light, and re-emits the absorbed light as red light. The display panel has a first surface formed with optical quality, light reflecting grooves which reflect, and disperse the edge coupled light out a second surface which is opposite to the …
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 10, 1990 and granted May 24, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 10, 2012.
- 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.