Method for reducing the power consumption of an incandescent light bulb
CA 2286891 A1 · Owner: Conrad, Wayne · Inventors: Conrad, Wayne
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus are provided for controlling the electrical power supply to an incandescent light source or bulb. The method comprises modifying the power supply with a pulse train. Parameters of the pulse train are selected in accordance with an algorithm. At least one parameter for example frequency, pulse width or voltage can be selected an optimized, to improve the efficiency of the light bulb whereby greater visible light is, produced for a given electrical input.
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 15, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 15, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2021.
- 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.