Lighting network system
CA 2195349 A1 · Owner: Dival, Ian · Inventors: Dival, Ian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A computer controlled dimming fluorescent lighting system is presented. This system is capable of responding to ambient light conditions by modulating the light output of dimming fluorescent lighting fixtures with respect to a userselected desired illumination level. Controls are incorporated to allow the use of a motion sensor to select between two user defined illumination levels. Controls are incorporated to allow the user to control the system operation by date and time of day in accordance with a user defined yearly schedule. The usermay also determine the desired illumination level by means of manually operated override controls.
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 January 17, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 17, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 17, 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.