Environmentally-sealed convectively-cooled active matrix liquid crystal display (lcd)
CA 2219476 C · Owner: Dobratz, Jeffrey A. · Inventors: Kull, Robert C.; Uehling, Mark A.; Dobratz, Jeffrey A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A display unit for use with a computer and a power supply includes an environmentally-sealed enclosure having a removable cover, and housing a liquid crystal display screen the removable, cover serving as an integral heat sink for the power supply the, power supply being mounted on the internal surface of the cover. Further a backlighting device backlights the display screen and, a cooling plenum conductively and convectively cools the backlighting device, the backlighting device being mounted directly on a surface of the plenum.
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 October 28, 1997 and granted January 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2019.
- 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.