Tsutomu Okutomi

Person

Kawasaki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Vacuum interrupter and vacuum switch thereof
- Patent number 6,346,683
- Issue date Feb 12, 2002
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact material for contacts for vacuum interrupter and method of...
- Patent number 6,303,076
- Issue date Oct 16, 2001
- Kabushiki Kaisha Toshiba
- Atsushi Yamamoto
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact material
- Patent number 6,210,809
- Issue date Apr 3, 2001
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vacuum valve
- Patent number 6,107,582
- Issue date Aug 22, 2000
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrode arrangement of vacuum circuit breaker with magnetic membe...
- Patent number 6,080,952
- Issue date Jun 27, 2000
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact material for vacuum interrupter and method for producing th...
- Patent number 6,027,821
- Issue date Feb 22, 2000
- Kabushiki Kaisha Toshiba
- Atsushi Yamamoto
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Contacts material
- Patent number 6,024,896
- Issue date Feb 15, 2000
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Contact material for vacuum valve
- Patent number 5,972,068
- Issue date Oct 26, 1999
- Kabushiki Kaisha Toshiba
- Tsuneyo Seki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Contact material for vacuum valve and method of manufacturing the same
- Patent number 5,882,448
- Issue date Mar 16, 1999
- Kabushiki Kaisha Toshiba
- Tsuneyo Seki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Contact electrode for vacuum interrupter
- Patent number 5,726,407
- Issue date Mar 10, 1998
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact material for vacuum valve and method of manufacturing the same
- Patent number 5,698,008
- Issue date Dec 16, 1997
- Kabushiki Kaisha Toshiba
- Tsuneyo Seki
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Contacts material for vacuum valve
- Patent number 5,500,499
- Issue date Mar 19, 1996
- Kabushiki Kaisha Toshiba
- Tsuneyo Seki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact material for a vacuum interrupter
- Patent number 5,420,384
- Issue date May 30, 1995
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact material for vacuum valve
- Patent number 5,409,519
- Issue date Apr 25, 1995
- Kabushiki Kaisha Toshiba
- Tsuneyo Seki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Process for manufacturing a contact material for vacuum circuit bre...
- Patent number 5,403,543
- Issue date Apr 4, 1995
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Contact material for vacuum circuit breakers
- Patent number 5,354,352
- Issue date Oct 11, 1994
- Kabushiki Kaisha Toshiba
- Tsuneyo Seki
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Grant
Vacuum interrupter
- Patent number 5,294,761
- Issue date Mar 15, 1994
- Kabushiki Kaisha Toshiba
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Contact for a vacuum interrupter
- Patent number 5,246,512
- Issue date Sep 21, 1993
- Kabushiki Kaisha Toshiba
- Tsuneyo Seki
- H01 - BASIC ELECTRIC ELEMENTS
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
Method of manufacturing a semiconductor device
- Patent number 5,056,702
- Issue date Oct 15, 1991
- Kabushiki Kaisha Toshiba
- Masako Nakahashi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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
Air-tight ceramic container
- Patent number 4,917,642
- Issue date Apr 17, 1990
- Kabushiki Kaisha Toshiba
- Masako Nakahashi
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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
Circuit breaker provided with parallel resistor
- Patent number 4,489,291
- Issue date Dec 18, 1984
- Tokyo Shibaura Denki Kabushiki Kaisha
- Mitsuru Toyoda
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electrical contact
- Patent number 4,345,130
- Issue date Aug 17, 1982
- Tokyo Shibaura Denki Kabushiki Kaisha
- Tsutomu Okutomi
- H01 - BASIC ELECTRIC ELEMENTS
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

Tsutomu Okutomi

Person

Patents Grantslast 30 patents

Vacuum interrupter and vacuum switch thereof

Contact material for contacts for vacuum interrupter and method of...

Contact material

Vacuum valve

Electrode arrangement of vacuum circuit breaker with magnetic membe...

Contact material for vacuum interrupter and method for producing th...

Contacts material

Contact material for vacuum valve

Contact material for vacuum valve and method of manufacturing the same

Contact electrode for vacuum interrupter

Contact material for vacuum valve and method of manufacturing the same

Contacts material for vacuum valve

Contact material for a vacuum interrupter

Contact material for vacuum valve

Process for manufacturing a contact material for vacuum circuit bre...

Contact material for vacuum circuit breakers

Vacuum interrupter

Contact for a vacuum interrupter

Contact forming material for a vacuum interrupter

Vacuum interrupter contacts and process for producing the same

Method of manufacturing a semiconductor device

Contact forming material for a vacuum interrupter

Vacuum interrupter contacts and process for producing the same

Air-tight ceramic container

Process of making a contact forming material for a vacuum valve

Contact forming material for a vacuum valve

Circuit breaker provided with parallel resistor

Electrical contact

Vacuum circuit breaker

Vacuum circuit breaker