Kiyoji Iwashita

Person

Hitachi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Electrical power distribution monitoring system and method
- Patent number 6,061,609
- Issue date May 9, 2000
- Hitachi, Ltd.
- Minoru Kanoi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electrical power distribution monitoring system and method
- Patent number 5,963,457
- Issue date Oct 5, 1999
- Hitachi, Ltd.
- Minoru Kanoi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method for making vacuum circuit breaker electrodes
- Patent number 4,836,978
- Issue date Jun 6, 1989
- Hitachi, Ltd.
- Ryuji Watanabe
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Vacuum interrupter
- Patent number 4,704,506
- Issue date Nov 3, 1987
- Hitachi, Ltd.
- Yukio Kurosawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum circuit breaker
- Patent number 4,695,689
- Issue date Sep 22, 1987
- Hitachi, Ltd.
- Yukio Kurosawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum circuit breaker
- Patent number 4,547,639
- Issue date Oct 15, 1985
- Hitachi, Ltd.
- Ryuji Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum switch and method of manufacturing the same
- Patent number 4,546,222
- Issue date Oct 8, 1985
- Hitachi, Ltd.
- Ryuji Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum interrupter
- Patent number 4,430,536
- Issue date Feb 7, 1984
- Hitachi, Ltd.
- Yukio Kurosawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum interrupter
- Patent number 4,427,857
- Issue date Jan 24, 1984
- Hitachi, Ltd.
- Nobuo Abe
- H01 - BASIC ELECTRIC ELEMENTS

Kiyoji Iwashita

Person

Patents Grantslast 30 patents

Electrical power distribution monitoring system and method

Electrical power distribution monitoring system and method

Method for making vacuum circuit breaker electrodes

Vacuum interrupter

Vacuum circuit breaker

Vacuum circuit breaker

Vacuum switch and method of manufacturing the same

Vacuum interrupter

Vacuum interrupter