Hendrik C. De Graaff

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Eindhoven, NL

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Patents Grantslast 30 patents

Information Patent Grant
Semiconductor protection device having a bipolar transistor and an...
- Patent number 4,697,199
- Issue date Sep 29, 1987
- U.S. Philips Corporation
- Hendrik C. De Graaff
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High breakdown voltage semiconductor device
- Patent number 4,409,606
- Issue date Oct 11, 1983
- U.S. Philips Corporation
- Kornelis J. Wagenaar
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing a semiconductor device
- Patent number 4,151,006
- Issue date Apr 24, 1979
- U.S. Philips Corporation
- Hendrik C. De Graaff
- H01 - BASIC ELECTRIC ELEMENTS