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Ronald Siepkes
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Eindhoven, NL
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last 30 patents
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Patent Grant
Circuit arrangement for ingniting and supplying power to a lamp
Patent number
5,844,380
Issue date
Dec 1, 1998
U.S. Philips Corporation
Ronald Siepkes
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Lighting control for reducing energy consumption
Patent number
5,808,423
Issue date
Sep 15, 1998
Philips Electronics North America Corporation
Richard Qun Li
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Discharge lamp fast preheat circuit independent of type of ballast
Patent number
5,477,109
Issue date
Dec 19, 1995
U.S. Philips Corporation
Hubertus M. J. Chermin
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR