Takuzo Ogawa

Person

Hitachi, JA

People

Patents Grantslast 30 patents

Information Patent Grant
Semiconductor photodetector
- Patent number 4,079,405
- Issue date Mar 14, 1978
- Hitachi, Ltd.
- Hirobumi Ohuchi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Photo-coupler semiconductor device and method of manufacturing the...
- Patent number 4,058,821
- Issue date Nov 15, 1977
- Hitachi, Ltd.
- Tadahiko Miyoshi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device having high blocking voltage with peripheral c...
- Patent number 4,040,084
- Issue date Aug 2, 1977
- Hitachi, Ltd.
- Tomoyuki Tanaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Bidirectional photothyristor device
- Patent number 4,016,593
- Issue date Apr 5, 1977
- Hitachi, Ltd.
- Nobutake Konishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Diode-integrated high speed thyristor
- Patent number 3,978,514
- Issue date Aug 31, 1976
- Hitachi, Ltd.
- Takuzo Ogawa
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor controlled rectifier
- Patent number 3,967,308
- Issue date Jun 29, 1976
- Hitachi, Ltd.
- Tsutomu Yatsuo
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light-activated semiconductor-controlled rectifier
- Patent number 3,943,550
- Issue date Mar 9, 1976
- Hitachi, Ltd.
- Nobutake Konishi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 3,943,547
- Issue date Mar 9, 1976
- Hitachi, Ltd.
- Takahiro Nagano
- H01 - BASIC ELECTRIC ELEMENTS

Takuzo Ogawa

Person

Patents Grantslast 30 patents

Semiconductor photodetector

Photo-coupler semiconductor device and method of manufacturing the...

Semiconductor device having high blocking voltage with peripheral c...

Bidirectional photothyristor device

Diode-integrated high speed thyristor

Semiconductor controlled rectifier

Light-activated semiconductor-controlled rectifier

Semiconductor device