Kazumi Nakanishi

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Inuyama, JP

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Patents Grantslast 30 patents

Information Patent Grant
System utilizing optical current sensors for detecting fault locati...
- Patent number 5,243,293
- Issue date Sep 7, 1993
- NGK Insulators, Ltd.
- Takashi Isozaki
- G01 - MEASURING TESTING
Information Patent Grant
Optical fiber built-in type composite insulator and method for prod...
- Patent number 5,136,680
- Issue date Aug 4, 1992
- NGK Insulators, Ltd.
- Shoji Seike
- G02 - OPTICS
Information Patent Grant
Optical fiber built-in type composite insulator and method of produ...
- Patent number 5,069,525
- Issue date Dec 3, 1991
- NGK Insulators, Ltd.
- Shoji Seike
- G02 - OPTICS
Information Patent Grant
Optical fiber-containing insulators
- Patent number 4,810,836
- Issue date Mar 7, 1989
- NGK Insulators, Ltd.
- Katsuro Shinoda
- G02 - OPTICS
Information Patent Grant
Work helmet having transmitter-receiver for light signal
- Patent number 4,648,131
- Issue date Mar 3, 1987
- NGK Insulators, Ltd.
- Toshiyuki Kawaguchi
- A42 - HEADWEAR