Robertus A. J. Keyser

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Veldhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Integrated HID reflector lamp with HID arc tube in a pressed glass...
- Patent number 6,111,359
- Issue date Aug 29, 2000
- Philips Electronics North America Corporation
- Dale Work
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High frequency HID lamp system
- Patent number 5,998,939
- Issue date Dec 7, 1999
- Philips Electronics North America Corporation
- Mark Fellows
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High frequency HID lamp system with lamp driven at a frequency abov...
- Patent number 5,828,185
- Issue date Oct 27, 1998
- Philips Electronics North America Corporation
- Mark Fellows
- H01 - BASIC ELECTRIC ELEMENTS