Seiki Igarashi

Person

Tokyo, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Driving apparatus, semiconductor apparatus, and driving method
- Patent number 11,621,626
- Issue date Apr 4, 2023
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Switching power supply circuit
- Patent number 6,657,873
- Issue date Dec 2, 2003
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electric power conversion apparatus with noise reduction device
- Patent number 6,459,597
- Issue date Oct 1, 2002
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply using an input DC power supply
- Patent number 6,339,262
- Issue date Jan 15, 2002
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
On-delay-compensating arm on-detection circuit
- Patent number 6,288,595
- Issue date Sep 11, 2001
- Fuji Electric Co., Ltd.
- Masaki Hirakata
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply
- Patent number 6,111,762
- Issue date Aug 29, 2000
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply with power factor control
- Patent number 6,108,218
- Issue date Aug 22, 2000
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Variable frequency soft switching power supply with reduced noise a...
- Patent number 6,061,253
- Issue date May 9, 2000
- Fuji Electrical Co., Ltd.
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Gate drive circuit for power converters that reduces surge voltages
- Patent number 5,936,387
- Issue date Aug 10, 1999
- Fuji Electric Co., Ltd.
- Masafumi Tabata
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Circuit for balancing steady-state currents of switching devices in...
- Patent number 5,889,663
- Issue date Mar 30, 1999
- Fuji Electric Co., Ltd.
- Masafumi Tabata
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power transistor module wiring structure
- Patent number 5,616,955
- Issue date Apr 1, 1997
- Fuji Electric Co., Ltd.
- Toshifusa Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit for a switching transistor
- Patent number 5,202,619
- Issue date Apr 13, 1993
- Fuji Electric Co., Ltd.
- Shoichi Furuhata
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
POWER CONVERTER CIRCUIT AND SEMICONDUCTOR MODULE
- Publication number 20240297596
- Publication date Sep 5, 2024
- Fuji Electric Co., Ltd.
- Seiki IGARASHI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SEMICONDUCTOR DEVICE AND SEMICONDUCTOR MODULE
- Publication number 20230344361
- Publication date Oct 26, 2023
- Fuji Electric Co., Ltd.
- Seiki IGARASHI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SEMICONDUCTOR UNIT
- Publication number 20230343756
- Publication date Oct 26, 2023
- Fuji Electric Co., Ltd.
- Seiki IGARASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DRIVING APPARATUS, SEMICONDUCTOR APPARATUS, AND DRIVING METHOD
- Publication number 20220190706
- Publication date Jun 16, 2022
- Fuji Electric Co., Ltd.
- Seiki IGARASHI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power supply circuit
- Publication number 20030058664
- Publication date Mar 27, 2003
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Electric power conversion apparatus
- Publication number 20020075702
- Publication date Jun 20, 2002
- Seiki Igarashi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Switching power supply
- Publication number 20010019490
- Publication date Sep 6, 2001
- Fuji Electric Co., Ltd.
- Seiki Igarashi
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...

Seiki Igarashi

Person

Patents Grantslast 30 patents

Driving apparatus, semiconductor apparatus, and driving method

Switching power supply circuit

Electric power conversion apparatus with noise reduction device

Switching power supply using an input DC power supply

On-delay-compensating arm on-detection circuit

Switching power supply

Switching power supply with power factor control

Variable frequency soft switching power supply with reduced noise a...

Gate drive circuit for power converters that reduces surge voltages

Circuit for balancing steady-state currents of switching devices in...

Power transistor module wiring structure

Control circuit for a switching transistor

Patents Applicationslast 30 patents

POWER CONVERTER CIRCUIT AND SEMICONDUCTOR MODULE

SEMICONDUCTOR DEVICE AND SEMICONDUCTOR MODULE

SEMICONDUCTOR UNIT

DRIVING APPARATUS, SEMICONDUCTOR APPARATUS, AND DRIVING METHOD

Switching power supply circuit

Electric power conversion apparatus

Switching power supply