Koji Ohtsuka

Person

Kawagoe-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Semiconductor light-emitting device using phosphors for performing...
- Patent number 7,323,723
- Issue date Jan 29, 2008
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Light-emitting semiconductor device having a quantum well active la...
- Patent number 7,176,480
- Issue date Feb 13, 2007
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Compound semiconductor substrates and method of fabrication
- Patent number 6,890,791
- Issue date May 10, 2005
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Hall-effect current detector
- Patent number 6,841,989
- Issue date Jan 11, 2005
- Sanken Electric Co, Ltd.
- Hirokazu Goto
- G01 - MEASURING TESTING
Information Patent Grant
Semiconductor current detector of improved noise immunity
- Patent number 6,812,687
- Issue date Nov 2, 2004
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- G01 - MEASURING TESTING
Information Patent Grant
Electrical current detector having a U-shaped current path and hall...
- Patent number 6,791,313
- Issue date Sep 14, 2004
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Hall-effect current detector
- Patent number 6,759,841
- Issue date Jul 6, 2004
- Sanken Electric Co., Ltd.
- Hirokazu Goto
- G01 - MEASURING TESTING
Information Patent Grant
Large current detector having a hall-effect device
- Patent number 6,683,448
- Issue date Jan 27, 2004
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Current detector utilizing hall effect
- Patent number 6,545,457
- Issue date Apr 8, 2003
- Sanken Electric Co., Ltd.
- Hirokazu Goto
- G01 - MEASURING TESTING
Information Patent Grant
Current detector having a hall-effect device
- Patent number 6,462,531
- Issue date Oct 8, 2002
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device having a hall-effect element
- Patent number 6,424,018
- Issue date Jul 23, 2002
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- G01 - MEASURING TESTING
Information Patent Grant
Light emitting semiconductor element with ZN doping
- Patent number 5,814,838
- Issue date Sep 29, 1998
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of manufacturing a Schottky barrier semiconductor device
- Patent number 5,221,638
- Issue date Jun 22, 1993
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of fabricating a high voltage, high speed Schottky semicondu...
- Patent number 5,158,909
- Issue date Oct 27, 1992
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High voltage, high speed schottky semiconductor device and method o...
- Patent number 5,148,240
- Issue date Sep 15, 1992
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Method of fabricating a high-voltage semiconductor device having a...
- Patent number 5,112,774
- Issue date May 12, 1992
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-voltage semiconductor device having a rectifying barrier, and...
- Patent number 5,081,510
- Issue date Jan 14, 1992
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High speed, high voltage schottky semiconductor device
- Patent number 5,075,740
- Issue date Dec 24, 1991
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High voltage, high speed Schottky semiconductor device and method o...
- Patent number 5,027,166
- Issue date Jun 25, 1991
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fabrication of P-N junction semiconductor device
- Patent number 5,006,483
- Issue date Apr 9, 1991
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
P-N junction semiconductor device and method of fabrication
- Patent number 4,980,749
- Issue date Dec 25, 1990
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Semiconductor light-emitting device light-emitting display method f...
- Publication number 20060175621
- Publication date Aug 10, 2006
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Light-emitting semiconductor device having a quantum well active la...
- Publication number 20050191778
- Publication date Sep 1, 2005
- Sanken Electric Co., Ltd
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Compound semiconductor substrates and method of fabrication
- Publication number 20040232440
- Publication date Nov 25, 2004
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Electrical current detector having a U-shaped current path and hall...
- Publication number 20040080307
- Publication date Apr 29, 2004
- Sanken Electric Co., Ltd.
- Koji Ohtsuka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Hall-effect current detector
- Publication number 20030001559
- Publication date Jan 2, 2003
- Sanken Electric Co., Ltd.
- Hirokazu Goto
- G01 - MEASURING TESTING
Information Patent Application
Hall-effect current detector
- Publication number 20020190703
- Publication date Dec 19, 2002
- Sanken Electric Co., Ltd.
- Hirokazu Goto
- G01 - MEASURING TESTING
Information Patent Application
Hall-effect magnetoelectric converter
- Publication number 20020011841
- Publication date Jan 31, 2002
- Sanken Electric Co., Ltd.
- Hirokazu Goto
- G01 - MEASURING TESTING

Koji Ohtsuka

Person

Patents Grantslast 30 patents

Semiconductor light-emitting device using phosphors for performing...

Light-emitting semiconductor device having a quantum well active la...

Compound semiconductor substrates and method of fabrication

Hall-effect current detector

Semiconductor current detector of improved noise immunity

Electrical current detector having a U-shaped current path and hall...

Hall-effect current detector

Large current detector having a hall-effect device

Current detector utilizing hall effect

Current detector having a hall-effect device

Semiconductor device having a hall-effect element

Light emitting semiconductor element with ZN doping

Method of manufacturing a Schottky barrier semiconductor device

Method of fabricating a high voltage, high speed Schottky semicondu...

High voltage, high speed schottky semiconductor device and method o...

Method of fabricating a high-voltage semiconductor device having a...

High-voltage semiconductor device having a rectifying barrier, and...

High speed, high voltage schottky semiconductor device

High voltage, high speed Schottky semiconductor device and method o...

Fabrication of P-N junction semiconductor device

P-N junction semiconductor device and method of fabrication

Patents Applicationslast 30 patents

Semiconductor light-emitting device light-emitting display method f...

Light-emitting semiconductor device having a quantum well active la...

Compound semiconductor substrates and method of fabrication

Electrical current detector having a U-shaped current path and hall...

Hall-effect current detector

Hall-effect current detector

Hall-effect magnetoelectric converter