Multiple discharge device hid lamp with preferential starting
CA 1280460 C · Owner: Philips Electronics North America Corporation · Inventors: Jacobs, Cornelis A.J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Multiple discharge device HID lamp with preferential starting. A high intensity discharge lamp having a plurality of discharge device, and a starting aid for preferentially starting one of the discharge devices. Upon initial application of power to the lamp the preferentially started discharge device will start first and the other discharge devices will not start. A power interruption during lamp operation will cause an interruption in the operation of the discharge device started first, upon reapplication of lamp power one of the other discharge devices that has not been operating will start without a hot restart delay.
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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
- Granted February 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 19, 2008.
- 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.