John P. Watjen

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Sunnyvale, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Composition monitor and monitoring process using impedance measurem...
- Patent number 5,103,181
- Issue date Apr 7, 1992
- Den norske oljeselskap a. s.
- Scott G. Gaisford
- G01 - MEASURING TESTING
Information Patent Grant
Resonant cavity optical modulator
- Patent number 4,733,397
- Issue date Mar 22, 1988
- Electrical Power Research Institute, Inc.
- Thomas F. Gallagher
- G02 - OPTICS
Information Patent Grant
Eddy current probe and method for flaw detection in metals
- Patent number 4,675,605
- Issue date Jun 23, 1987
- SRI International
- John P. Watjen
- G01 - MEASURING TESTING