Ryuji Yamada

Person

Hachioji, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Integrated circuit and power supply circuit
- Patent number 12,166,413
- Issue date Dec 10, 2024
- Fuji Electric Co., Ltd.
- Ryuunosuke Araumi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching control circuit and power supply circuit
- Patent number 12,081,116
- Issue date Sep 3, 2024
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current detection circuit including non-linear circuit and power su...
- Patent number 12,051,964
- Issue date Jul 30, 2024
- Fuji Electric Co., Ltd.
- Ryuunosuke Araumi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching control circuit and resonant converter
- Patent number 11,876,441
- Issue date Jan 16, 2024
- Fuji Electric Co., Ltd.
- Ryuunosuke Araumi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching control circuit and power factor correction circuit
- Patent number 11,764,667
- Issue date Sep 19, 2023
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching control circuit and power supply circuit
- Patent number 11,742,746
- Issue date Aug 29, 2023
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching control circuit and LLC converter
- Patent number 11,705,814
- Issue date Jul 18, 2023
- Fuji Electric Co., Ltd.
- Ryuunosuke Araumi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Snubber apparatus and power conversion apparatus
- Patent number 11,632,038
- Issue date Apr 18, 2023
- Fuji Electric Co., Ltd.
- Qichen Wang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching control circuit and power supply circuit
- Patent number 11,515,782
- Issue date Nov 29, 2022
- Fuji Electric Co., Ltd.
- Ryuunosuke Araumi
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power conversion device, control method, and computer-readable medium
- Patent number 11,223,290
- Issue date Jan 11, 2022
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Snubber module, snubber apparatus and power conversion apparatus
- Patent number 11,218,070
- Issue date Jan 4, 2022
- Fuji Electric Co., Ltd.
- Qichen Wang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Snubber device and power conversion apparatus
- Patent number 11,165,333
- Issue date Nov 2, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Integrated circuit and switching circuit
- Patent number 11,159,085
- Issue date Oct 26, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Snubber circuit and power conversion apparatus
- Patent number 11,152,851
- Issue date Oct 19, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Snubber circuit and power conversion apparatus
- Patent number 11,146,168
- Issue date Oct 12, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Drive signal generating circuit and power supply circuit
- Patent number 11,101,730
- Issue date Aug 24, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Drive signal generating circuit and power supply circuit for improv...
- Patent number 11,038,416
- Issue date Jun 15, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Drive signal generating circuit and power supply circuit
- Patent number 11,031,870
- Issue date Jun 8, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply for output of various specifications
- Patent number 10,931,206
- Issue date Feb 23, 2021
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power conversion device
- Patent number 10,811,992
- Issue date Oct 20, 2020
- Fuji Electric Co., Ltd.
- Satoru Fujita
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power supply system and power supply apparatus
- Patent number 10,811,877
- Issue date Oct 20, 2020
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power converter having an input-side converter and first and second...
- Patent number 10,715,030
- Issue date Jul 14, 2020
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power conversion circuit with a compensation circuit
- Patent number 10,693,365
- Issue date Jun 23, 2020
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
AC-DC converter
- Patent number 10,374,513
- Issue date Aug 6, 2019
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
AC-DC converter
- Patent number 10,312,800
- Issue date Jun 4, 2019
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Silicon carbide semiconductor device, method of manufacturing silic...
- Patent number 10,128,369
- Issue date Nov 13, 2018
- Fuji Electric Co., Ltd.
- Manabu Takei
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Semiconductor device
- Patent number 10,123,443
- Issue date Nov 6, 2018
- Fuji Electric Co., Ltd.
- Hideyo Nakamura
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Solar power generation system
- Patent number 10,090,701
- Issue date Oct 2, 2018
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power converting device
- Patent number 9,979,286
- Issue date May 22, 2018
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC power supply with multi-cell converter
- Patent number 9,960,688
- Issue date May 1, 2018
- Fuji Electric Co., Ltd.
- Satoru Fujita
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20250047198
- Publication date Feb 6, 2025
- Fuji Electric Co., Ltd.
- Ryuunosuke ARAUMI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20240333132
- Publication date Oct 3, 2024
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CURRENT DETECTION CIRCUIT, INTEGRATED CIRCUIT, AND POWER SUPPLY CIR...
- Publication number 20240243658
- Publication date Jul 18, 2024
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT, CONTROL CIRCUIT, AND POWER SUPPLY CIRCUIT
- Publication number 20240146184
- Publication date May 2, 2024
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT
- Publication number 20240072648
- Publication date Feb 29, 2024
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20230299666
- Publication date Sep 21, 2023
- Fuji Electric Co., Ltd.
- Ryuunosuke ARAUMI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20230088626
- Publication date Mar 23, 2023
- Fuji Electric Co., Ltd.
- Ryuunosuke ARAUMI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20230072309
- Publication date Mar 9, 2023
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND RESONANT CONVERTER
- Publication number 20220302824
- Publication date Sep 22, 2022
- Fuji Electric Co., Ltd.
- Ryuunosuke ARAUMI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SNUBBER APPARATUS AND POWER CONVERSION APPARATUS
- Publication number 20220224221
- Publication date Jul 14, 2022
- Fuji Electric Co., Ltd.
- Qichen WANG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20220209647
- Publication date Jun 30, 2022
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT
- Publication number 20220200444
- Publication date Jun 23, 2022
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CURRENT DETECTION CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20220173650
- Publication date Jun 2, 2022
- Fuji Electric Co., Ltd.
- Ryuunosuke ARAUMI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND LLC CONVERTER
- Publication number 20210376738
- Publication date Dec 2, 2021
- Fuji Electric Co., Ltd.
- Ryuunosuke ARAUMI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERSION DEVICE, CONTROL METHOD, AND COMPUTER-READABLE MEDIUM
- Publication number 20210159804
- Publication date May 27, 2021
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20210111638
- Publication date Apr 15, 2021
- Fuji Electric Co., Ltd.
- Ryuunosuke ARAUMI
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SNUBBER CIRCUIT AND POWER CONVERSION APPARATUS
- Publication number 20210067031
- Publication date Mar 4, 2021
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SNUBBER CIRCUIT AND POWER CONVERSION APPARATUS
- Publication number 20210067030
- Publication date Mar 4, 2021
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SNUBBER MODULE, SNUBBER APPARATUS AND POWER CONVERSION APPARATUS
- Publication number 20200295652
- Publication date Sep 17, 2020
- Fuji Electric Co., Ltd.
- Qichen WANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DRIVE SIGNAL GENERATING CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20200251988
- Publication date Aug 6, 2020
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DRIVE SIGNAL GENERATING CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20200251989
- Publication date Aug 6, 2020
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SNUBBER DEVICE AND POWER CONVERSION APPARATUS
- Publication number 20200244158
- Publication date Jul 30, 2020
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DRIVE SIGNAL GENERATING CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20200212793
- Publication date Jul 2, 2020
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
INTEGRATED CIRCUIT AND SWITCHING CIRCUIT
- Publication number 20200186030
- Publication date Jun 11, 2020
- Fuji Electric Co., Ltd.
- Ryuji Yamada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SWITCH APPARATUS
- Publication number 20200044650
- Publication date Feb 6, 2020
- Fuji Electric Co., Ltd.
- Satoru FUJITA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERSION CIRCUIT
- Publication number 20190356236
- Publication date Nov 21, 2019
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
POWER CONVERTER
- Publication number 20190348903
- Publication date Nov 14, 2019
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
AC-DC CONVERTER
- Publication number 20190103808
- Publication date Apr 4, 2019
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- G05 - CONTROLLING REGULATING
Information Patent Application
AC-DC CONVERTER
- Publication number 20190097532
- Publication date Mar 28, 2019
- Fuji Electric Co., Ltd.
- Ryuji YAMADA
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
POWER CONVERSION DEVICE
- Publication number 20190068078
- Publication date Feb 28, 2019
- Fuji Electric Co., Ltd.
- Satoru FUJITA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Ryuji Yamada

Person

Patents Grantslast 30 patents

Integrated circuit and power supply circuit

Switching control circuit and power supply circuit

Current detection circuit including non-linear circuit and power su...

Switching control circuit and resonant converter

Switching control circuit and power factor correction circuit

Switching control circuit and power supply circuit

Switching control circuit and LLC converter

Snubber apparatus and power conversion apparatus

Switching control circuit and power supply circuit

Power conversion device, control method, and computer-readable medium

Snubber module, snubber apparatus and power conversion apparatus

Snubber device and power conversion apparatus

Integrated circuit and switching circuit

Snubber circuit and power conversion apparatus

Snubber circuit and power conversion apparatus

Drive signal generating circuit and power supply circuit

Drive signal generating circuit and power supply circuit for improv...

Drive signal generating circuit and power supply circuit

Power supply for output of various specifications

Power conversion device

Power supply system and power supply apparatus

Power converter having an input-side converter and first and second...

Power conversion circuit with a compensation circuit

AC-DC converter

AC-DC converter

Silicon carbide semiconductor device, method of manufacturing silic...

Semiconductor device

Solar power generation system

Power converting device

DC power supply with multi-cell converter

Patents Applicationslast 30 patents

INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT

SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT

CURRENT DETECTION CIRCUIT, INTEGRATED CIRCUIT, AND POWER SUPPLY CIR...

SWITCHING CONTROL CIRCUIT, CONTROL CIRCUIT, AND POWER SUPPLY CIRCUIT

SWITCHING CONTROL CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT

SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT

INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT

SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT

SWITCHING CONTROL CIRCUIT AND RESONANT CONVERTER

SNUBBER APPARATUS AND POWER CONVERSION APPARATUS

SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT

SWITCHING CONTROL CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT

CURRENT DETECTION CIRCUIT AND POWER SUPPLY CIRCUIT

SWITCHING CONTROL CIRCUIT AND LLC CONVERTER

POWER CONVERSION DEVICE, CONTROL METHOD, AND COMPUTER-READABLE MEDIUM

SWITCHING CONTROL CIRCUIT AND POWER SUPPLY CIRCUIT

SNUBBER CIRCUIT AND POWER CONVERSION APPARATUS

SNUBBER CIRCUIT AND POWER CONVERSION APPARATUS

SNUBBER MODULE, SNUBBER APPARATUS AND POWER CONVERSION APPARATUS

DRIVE SIGNAL GENERATING CIRCUIT AND POWER SUPPLY CIRCUIT

DRIVE SIGNAL GENERATING CIRCUIT AND POWER SUPPLY CIRCUIT

SNUBBER DEVICE AND POWER CONVERSION APPARATUS

DRIVE SIGNAL GENERATING CIRCUIT AND POWER SUPPLY CIRCUIT

INTEGRATED CIRCUIT AND SWITCHING CIRCUIT

SWITCH APPARATUS

POWER CONVERSION CIRCUIT

POWER CONVERTER

AC-DC CONVERTER

AC-DC CONVERTER

POWER CONVERSION DEVICE