Hashime Nagai

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Kitaibaraki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Control system for an industrial plant, a display device for such a...
- Patent number 5,353,400
- Issue date Oct 4, 1994
- Hitachi, Ltd.
- Seiitsu Nigawara
- G07 - CHECKING-DEVICES
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Abnormality diagnosing system and method for a high voltage power a...
- Patent number 5,214,595
- Issue date May 25, 1993
- Hitachi, Ltd.
- Jun Ozawa
- G01 - MEASURING TESTING
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Abnormality diagnosing system and method for a high voltage power a...
- Patent number 5,107,447
- Issue date Apr 21, 1992
- Hitachi, Ltd.
- Jun Ozawa
- G01 - MEASURING TESTING
Information Patent Grant
Power system and synchronizing breakers for a variable speed genera...
- Patent number 4,952,852
- Issue date Aug 28, 1990
- Hitachi, Ltd.
- Akira Bando
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER