Hiroshi MARUYAMA

Person

Matsumoto-city, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Control circuit and switching power source
- Patent number 12,362,674
- Issue date Jul 15, 2025
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit and switching power source
- Patent number 12,355,358
- Issue date Jul 8, 2025
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Integrated circuit and power supply circuit
- Patent number 12,191,761
- Issue date Jan 7, 2025
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Integrated circuit and power supply circuit
- Patent number 11,996,763
- Issue date May 28, 2024
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Terminal protection circuit of semiconductor chip
- Patent number 11,521,960
- Issue date Dec 6, 2022
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Integrated circuit and power supply circuit
- Patent number 11,411,499
- Issue date Aug 9, 2022
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Frequency setting in a power supply device, power supply control de...
- Patent number 11,336,170
- Issue date May 17, 2022
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switched-mode power supply circuit
- Patent number 10,461,649
- Issue date Oct 29, 2019
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply device
- Patent number 10,158,282
- Issue date Dec 18, 2018
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Power factor correction circuit and switching power supply apparatus
- Patent number 9,859,788
- Issue date Jan 2, 2018
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply circuit and power factor correction circuit
- Patent number 9,660,519
- Issue date May 23, 2017
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching power supply
- Patent number 9,293,982
- Issue date Mar 22, 2016
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit of a quasi-resonance switching power supply
- Patent number 9,077,251
- Issue date Jul 7, 2015
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
CONTROL CIRCUIT AND SWITCHING POWER SOURCE
- Publication number 20230421066
- Publication date Dec 28, 2023
- Fuji Electric Co., Ltd.
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20230198411
- Publication date Jun 22, 2023
- Fuji Electric Co., Ltd.
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONTROL CIRCUIT AND SWITCHING POWER SOURCE
- Publication number 20230024431
- Publication date Jan 26, 2023
- Fuji Electric Co., Ltd.
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20220166309
- Publication date May 26, 2022
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT
- Publication number 20220038009
- Publication date Feb 3, 2022
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
TERMINAL PROTECTION CIRCUIT OF SEMICONDUCTOR CHIP
- Publication number 20210225833
- Publication date Jul 22, 2021
- Fuji Electric Co., Ltd.
- Hiroshi MARUYAMA
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
POWER SUPPLY DEVICE, POWER SUPPLY CONTROL DEVICE, AND POWER SUPPLY...
- Publication number 20200195128
- Publication date Jun 18, 2020
- Fuji Electric Co., Ltd.
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHED-MODE POWER SUPPLY CIRCUIT
- Publication number 20190115841
- Publication date Apr 18, 2019
- FUJI ELECTRIC CO.,LTD.
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY DEVICE
- Publication number 20180367029
- Publication date Dec 20, 2018
- Fuji Electric Co., Ltd.
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
HIGHLY-EFFICIENT POWER FACTOR CORRECTION CIRCUIT AND SWITCHING POWE...
- Publication number 20160380530
- Publication date Dec 29, 2016
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT
- Publication number 20160241134
- Publication date Aug 18, 2016
- Fuji Electric Co., Ltd.
- Hiroshi Maruyama
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SWITCHING POWER SUPPLY
- Publication number 20140185340
- Publication date Jul 3, 2014
- Fuji Electric Co., Ltd.
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONTROL CIRCUT OF A QUASI-RESONANCE SWITCHING POWER SUPPLY
- Publication number 20140016365
- Publication date Jan 16, 2014
- Hiroshi MARUYAMA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Hiroshi MARUYAMA

Person

Patents Grantslast 30 patents

Control circuit and switching power source

Control circuit and switching power source

Integrated circuit and power supply circuit

Integrated circuit and power supply circuit

Terminal protection circuit of semiconductor chip

Integrated circuit and power supply circuit

Frequency setting in a power supply device, power supply control de...

Switched-mode power supply circuit

Switching power supply device

Power factor correction circuit and switching power supply apparatus

Switching power supply circuit and power factor correction circuit

Switching power supply

Control circuit of a quasi-resonance switching power supply

Patents Applicationslast 30 patents

CONTROL CIRCUIT AND SWITCHING POWER SOURCE

INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT

CONTROL CIRCUIT AND SWITCHING POWER SOURCE

INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT

INTEGRATED CIRCUIT AND POWER SUPPLY CIRCUIT

TERMINAL PROTECTION CIRCUIT OF SEMICONDUCTOR CHIP

POWER SUPPLY DEVICE, POWER SUPPLY CONTROL DEVICE, AND POWER SUPPLY...

SWITCHED-MODE POWER SUPPLY CIRCUIT

SWITCHING POWER SUPPLY DEVICE

HIGHLY-EFFICIENT POWER FACTOR CORRECTION CIRCUIT AND SWITCHING POWE...

SWITCHING POWER SUPPLY CIRCUIT AND POWER FACTOR CORRECTION CIRCUIT

SWITCHING POWER SUPPLY

CONTROL CIRCUT OF A QUASI-RESONANCE SWITCHING POWER SUPPLY