Tsutomu Yatsuo

Person

Hitachi-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Static induction transistor
- Patent number 6,750,477
- Issue date Jun 15, 2004
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device and power converter using the same
- Patent number 6,566,726
- Issue date May 20, 2003
- Hitachi, Ltd.
- Hidekatsu Onose
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Silicon carbide semiconductor switching device
- Patent number 6,384,428
- Issue date May 7, 2002
- Hitachi, Ltd.
- Toshiyuki Oono
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor surge absorber, electrical-electronic apparatus, and...
- Patent number 6,353,236
- Issue date Mar 5, 2002
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Static induction semiconductor device, and driving method and drive...
- Patent number 6,180,959
- Issue date Jan 30, 2001
- Hitachi, Ltd.
- Takayuki Iwasaki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power converter with clamping circuit
- Patent number 6,169,672
- Issue date Jan 2, 2001
- Hitachi, Ltd.
- Shin Kimura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Semiconductor thyristor switching device and power converter using...
- Patent number 5,831,293
- Issue date Nov 3, 1998
- Hitachi, Ltd.
- Tetsuo Mizoguchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device for improved power conversion having a hexagon...
- Patent number 5,736,753
- Issue date Apr 7, 1998
- Hitachi, Ltd.
- Toshiyuki Ohno
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Turn off type semiconductor device, method of producing the same an...
- Patent number 5,324,967
- Issue date Jun 28, 1994
- Hitachi, Ltd.
- Hideo Honma
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gate turn-off thyristor
- Patent number 5,021,855
- Issue date Jun 4, 1991
- Hitachi, Ltd.
- Saburo Oikawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gate turn-off thyristor
- Patent number 4,825,270
- Issue date Apr 25, 1989
- Hitachi, Ltd.
- Yukimasa Satou
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device having high breakdown voltage
- Patent number 4,691,223
- Issue date Sep 1, 1987
- Hitachi, Ltd.
- Susumu Murakami
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High voltage thyristor with optimized doping, thickness, and sheet...
- Patent number 4,682,199
- Issue date Jul 21, 1987
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device provided with electrically floating control el...
- Patent number 4,651,189
- Issue date Mar 17, 1987
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device with floating remote gate turn-off means
- Patent number 4,646,122
- Issue date Feb 24, 1987
- Hitachi, Ltd.
- Shin Kimura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gate turn-off thyristor
- Patent number 4,626,888
- Issue date Dec 2, 1986
- Hitachi, Ltd.
- Takahiro Nagano
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor devices of multi-emitter type
- Patent number 4,542,398
- Issue date Sep 17, 1985
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor GTO switching device with radially elongated cathode...
- Patent number 4,500,903
- Issue date Feb 19, 1985
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Gate turn-off amplified thyristor with non-shorted auxiliary anode
- Patent number 4,443,810
- Issue date Apr 17, 1984
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light activated semiconductor device
- Patent number 4,404,580
- Issue date Sep 13, 1983
- Hitachi, Ltd.
- Nobutake Konishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High breakdown voltage semiconductor device
- Patent number 4,388,635
- Issue date Jun 14, 1983
- Hitachi, Ltd.
- Atsuo Watanabe
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor controlled rectifier device with small area dV/dt sel...
- Patent number 4,240,091
- Issue date Dec 16, 1980
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Bidirectional light-activated thyristor having substrate optical is...
- Patent number 4,216,487
- Issue date Aug 5, 1980
- Hitachi, Ltd.
- Nobutake Konishi
- G02 - OPTICS
Information Patent Grant
Bidirectional grooved thyristor fired by activation of the beveled...
- Patent number 4,110,781
- Issue date Aug 29, 1978
- Hitachi, Ltd.
- Nobutake Konishi
- G02 - OPTICS
Information Patent Grant
Light coupled semiconductor device and method of manufacturing the...
- Patent number 4,100,562
- Issue date Jul 11, 1978
- Hitachi, Ltd.
- Yoshitaka Sugawara
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
Static induction transistor, method of manufacturing same and elect...
- Publication number 20050006649
- Publication date Jan 13, 2005
- Takayuki Iwasaki
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Static induction transistor
- Publication number 20020109145
- Publication date Aug 15, 2002
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS

Tsutomu Yatsuo

Person

Patents Grantslast 30 patents

Static induction transistor

Semiconductor device and power converter using the same

Silicon carbide semiconductor switching device

Semiconductor surge absorber, electrical-electronic apparatus, and...

Static induction semiconductor device, and driving method and drive...

Power converter with clamping circuit

Semiconductor thyristor switching device and power converter using...

Semiconductor device for improved power conversion having a hexagon...

Turn off type semiconductor device, method of producing the same an...

Gate turn-off thyristor

Gate turn-off thyristor

Semiconductor device having high breakdown voltage

High voltage thyristor with optimized doping, thickness, and sheet...

Semiconductor device provided with electrically floating control el...

Semiconductor device with floating remote gate turn-off means

Gate turn-off thyristor

Semiconductor devices of multi-emitter type

Semiconductor GTO switching device with radially elongated cathode...

Gate turn-off amplified thyristor with non-shorted auxiliary anode

Light activated semiconductor device

High breakdown voltage semiconductor device

Semiconductor controlled rectifier device with small area dV/dt sel...

Bidirectional light-activated thyristor having substrate optical is...

Bidirectional grooved thyristor fired by activation of the beveled...

Light coupled semiconductor device and method of manufacturing the...

Patents Applicationslast 30 patents

Static induction transistor, method of manufacturing same and elect...

Static induction transistor