Seishi Chiba

Person

Yokohama, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Contact forming material for a vacuum interrupter
- Patent number 5,149,362
- Issue date Sep 22, 1992
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum interrupter contacts and process for producing the same
- Patent number 5,109,145
- Issue date Apr 28, 1992
- Kabushiki Kaisha Toshiba
- Hajime Fujita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact forming material for a vacuum interrupter
- Patent number 5,045,281
- Issue date Sep 3, 1991
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum interrupter contacts and process for producing the same
- Patent number 4,940,863
- Issue date Jul 10, 1990
- Kabushiki Kaisha Toshiba
- Hajime Fujita
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process of making a contact forming material for a vacuum valve
- Patent number 4,830,821
- Issue date May 16, 1989
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Contact forming material for a vacuum valve
- Patent number 4,777,335
- Issue date Oct 11, 1988
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Vacuum circuit breaker
- Patent number 4,129,761
- Issue date Dec 12, 1978
- Tokyo Shibaura Electric Co., Ltd.
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum circuit breaker
- Patent number 4,129,760
- Issue date Dec 12, 1978
- Tokyo Shibaura Electric Co., Ltd.
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS

Seishi Chiba

Person

Patents Grantslast 30 patents

Contact forming material for a vacuum interrupter

Vacuum interrupter contacts and process for producing the same

Contact forming material for a vacuum interrupter

Vacuum interrupter contacts and process for producing the same

Process of making a contact forming material for a vacuum valve

Contact forming material for a vacuum valve

Vacuum circuit breaker

Vacuum circuit breaker