System for and method of operating a discharge lamp
CA 2297415 A1 · Owner: Osram Sylvania Inc. · Inventors: Olsen, Joseph A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of and system for operating a high intensity discharge lamp having an electronic ballast system is provided wherein the power supplied to the discharge lamp is increased by bending the arc in the arc tube in order to increase the length of the arc. Bending may be effected by injecting acoustic frequencies in the power supplied to the discharge lamp.
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 28, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2022.
- 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.