Masanobu Yamamoto

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Handa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical voltage electric field sensor
- Patent number 5,446,381
- Issue date Aug 29, 1995
- NGK Insulators, Ltd.
- Hisakazu Okajima
- G01 - MEASURING TESTING
Information Patent Grant
Optical sensor and method for producing the same
- Patent number 5,210,800
- Issue date May 11, 1993
- NGK Insulators, Ltd.
- Yuji Asai
- G02 - OPTICS
Information Patent Grant
Optical magnetic-field sensor having an integrally bonded magnetoop...
- Patent number 5,202,629
- Issue date Apr 13, 1993
- NGK Insulators, Ltd.
- Shoji Seike
- G01 - MEASURING TESTING