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Patents Grants
last 30 patents
Information
Patent Grant
Semiconductor device signal transmission circuit for drive-control,...
Patent number
11,539,361
Issue date
Dec 27, 2022
Hitachi Power Semiconductor Device, Ltd.
Toru Masuda
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Gate drive device, gate drive method, power semiconductor module, a...
Patent number
11,496,041
Issue date
Nov 8, 2022
Hitachi Power Semiconductor Device, Ltd.
Daisuke Ikarashi
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Power semiconductor module
Patent number
10,888,941
Issue date
Jan 12, 2021
Hitachi Power Semiconductor Device, Ltd.
Daichi Kawamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Acoustic emission wave detection system for a high voltage apparatus
Patent number
10,488,515
Issue date
Nov 26, 2019
Hitachi, Ltd.
Daichi Kawamura
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Power module, electrical power conversion device, and driving devic...
Patent number
10,115,700
Issue date
Oct 30, 2018
Hitachi, Ltd.
Ryuusei Fujita
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Power transistor module
Patent number
10,002,858
Issue date
Jun 19, 2018
Hitachi, Ltd.
Toru Masuda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Variable inductor, and oscillator and communication system using th...
Patent number
8,502,614
Issue date
Aug 6, 2013
Renesas Electronics Corporation
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Variable-gain amplifier circuit and wireless communication device i...
Patent number
8,212,615
Issue date
Jul 3, 2012
Hitachi, Ltd.
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Active mixer circuit and a receiver circuit or a millimeter-wave co...
Patent number
8,121,579
Issue date
Feb 21, 2012
Hitachi, Ltd.
Nobuhiro Shiramizu
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Variable inductor, and oscillator and communication system using th...
Patent number
7,902,934
Issue date
Mar 8, 2011
Renesas Electronics Corporation
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Active resonant circuit with resonant-frequency tunability
Patent number
7,843,287
Issue date
Nov 30, 2010
Renesas Electronics Corporation
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Voltage-controlled oscillator and communication device using the same
Patent number
7,839,229
Issue date
Nov 23, 2010
Hitachi, Ltd.
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Frequency synthesizer
Patent number
7,826,814
Issue date
Nov 2, 2010
Renesas Electronics Corporation
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor integrated circuit with variable gain amplifier
Patent number
7,821,335
Issue date
Oct 26, 2010
Renesas Electronics Corporation
Nobuhiro Shiramizu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Semiconductor devices with inductors
Patent number
7,642,618
Issue date
Jan 5, 2010
Renesas Technology Corp.
Nobuhiro Shiramizu
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Variable frequency oscillator and communication circuit with it
Patent number
7,592,877
Issue date
Sep 22, 2009
Hitachi, Ltd.
Nobuhiro Shiramizu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Voltage controlled oscillator and wireless transceiver using the same
Patent number
7,589,596
Issue date
Sep 15, 2009
Renesas Technology Corp.
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Oscillator and data processing equipment using the same and voltage...
Patent number
7,518,458
Issue date
Apr 14, 2009
Renesas Technology Corp.
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Frequency generator and communication system using the same
Patent number
7,177,612
Issue date
Feb 13, 2007
Renesas Technology Corp.
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Radio frequency power amplifier and communication system
Patent number
7,098,740
Issue date
Aug 29, 2006
Renesas Technology Corp.
Masao Kondo
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Frequency generator and communication system
Patent number
7,091,757
Issue date
Aug 15, 2006
Hitachi, Ltd.
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Optical receiver using variable negative-capacitance circuit
Patent number
6,785,477
Issue date
Aug 31, 2004
Hitachi, Ltd.
Toru Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiver
Patent number
6,658,217
Issue date
Dec 2, 2003
Hitachi, Ltd.
Kenichi Ohhata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Optical receiver
Patent number
6,304,357
Issue date
Oct 16, 2001
Hitachi, Ltd.
Kenichi Ohhata
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Memory cell and a memory device having reduced soft error
Patent number
5,523,966
Issue date
Jun 4, 1996
Hitachi, Ltd.
Youji Idei
G11 - INFORMATION STORAGE
Information
Patent Grant
Semiconductor memory device having a controlled auxiliary decoder
Patent number
5,402,377
Issue date
Mar 28, 1995
Hitachi, Ltd.
Kenichi Ohhata
G11 - INFORMATION STORAGE
Patents Applications
last 30 patents
Information
Patent Application
POWER SEMICONDUCTOR MODULE AND POWER CONVERSION DEVICE
Publication number
20240290698
Publication date
Aug 29, 2024
HITACHI POWER SEMICONDUCTOR DEVICE, LTD.
Toru MASUDA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
POWER SEMICONDUCTOR MODULE AND POWER CONVERSION DEVICE
Publication number
20230282561
Publication date
Sep 7, 2023
Hitachi Power Semiconductor Device, Ltd.
Toru Masuda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
POWER SEMICONDUCTOR MODULE
Publication number
20220302075
Publication date
Sep 22, 2022
Hitachi Power Semiconductor Device, Ltd.
Toru Masuda
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Gate Drive Device, Gate Drive Method, Power Semiconductor Module, a...
Publication number
20210296979
Publication date
Sep 23, 2021
Hitachi Power Semiconductor Device, Ltd.
Daisuke IKARASHI
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Semiconductor Device Signal Transmission Circuit for Drive-Control,...
Publication number
20210288640
Publication date
Sep 16, 2021
Hitachi Power Semiconductor Device, Ltd.
Toru MASUDA
B60 - VEHICLES IN GENERAL
Information
Patent Application
POWER SEMICONDUCTOR MODULE
Publication number
20190126374
Publication date
May 2, 2019
HITACHI POWER SEMICONDUCTOR DEVICE, LTD.
Daichi KAWAMURA
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
POWER MODULE, ELECTRICAL POWER CONVERSION DEVICE, AND DRIVING DEVIC...
Publication number
20180026009
Publication date
Jan 25, 2018
Hitachi, Ltd
Ryuusei FUJITA
B60 - VEHICLES IN GENERAL
Information
Patent Application
Acoustic Emission Wave Detector, Acoustic Emission Wave Detection S...
Publication number
20170329006
Publication date
Nov 16, 2017
Daichi KAWAMURA
G01 - MEASURING TESTING
Information
Patent Application
Power Transistor Module
Publication number
20170170157
Publication date
Jun 15, 2017
Hitachi, Ltd
Toru MASUDA
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
VARIABLE INDUCTOR, AND OSCILLATOR AND COMMUNICATION SYSTEM USING TH...
Publication number
20110105053
Publication date
May 5, 2011
RENESAS ELECTRONICS CORPORATION
Takahiro NAKAMURA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
VARIABLE-GAIN AMPLIFIER CIRCUIT AND WIRELESS COMMUNICATION DEVICE I...
Publication number
20100271122
Publication date
Oct 28, 2010
Hitachi, Ltd.
Toru MASUDA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
ACTIVE MIXER CIRCUIT AND A RECEIVER CIRCUIT OR A MILLIMETER-WAVE CO...
Publication number
20090221259
Publication date
Sep 3, 2009
Hitachi, Ltd.
Nobuhiro SHIRAMIZU
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
SEMICONDUCTOR INTEGRATED CIRCUIT WITH VARIABLE GAIN AMPLIFIER
Publication number
20090102552
Publication date
Apr 23, 2009
RENESAS TECHNOLOGY CORP.
Nobuhiro SHIRAMIZU
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
ACTIVE RESONANT CIRCUIT WITH RESONANT-FREQUENCY TUNABILITY
Publication number
20090033440
Publication date
Feb 5, 2009
RENESAS TECHNOLOGY CORP.
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
VOLTAGE-CONTROLLED OSCILLATOR AND COMMUNICATION DEVICE USING THE SAME
Publication number
20080174375
Publication date
Jul 24, 2008
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
VARIABLE FREQUENCY OSCILLATOR AND COMMUNICATION CIRCUIT WITH IT
Publication number
20080122546
Publication date
May 29, 2008
Nobuhiro SHIRAMIZU
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
FREQUENCY SYNTHESIZER
Publication number
20070298750
Publication date
Dec 27, 2007
RENESAS TECHNOLOGY CORP.
Toru MASUDA
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Oscillator and data processing equipment using the same and voltage...
Publication number
20070103248
Publication date
May 10, 2007
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Voltage controlled oscillator and wireless transceiver using the same
Publication number
20060261902
Publication date
Nov 23, 2006
RENESAS TECHNOLOGY CORP.
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Variable inductor, and oscillator and communication system using th...
Publication number
20060097811
Publication date
May 11, 2006
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Semiconductor devices with inductors
Publication number
20060038621
Publication date
Feb 23, 2006
Nobuhiro Shiramizu
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Frequency generator and communication system
Publication number
20050077930
Publication date
Apr 14, 2005
Hitachi, Ltd.
Toru Masuda
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Frequency generator and communication system using the same
Publication number
20050059373
Publication date
Mar 17, 2005
Takahiro Nakamura
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Transmitter and a signal generator in optical transmission systems
Publication number
20040213580
Publication date
Oct 28, 2004
Hitachi, Ltd.
Toru Masuda
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Application
Radio frequency power amplifier and communication system
Publication number
20040113699
Publication date
Jun 17, 2004
RENESAS TECHNOLOGY CORP.
Masao Kondo
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Optical receiver
Publication number
20020005974
Publication date
Jan 17, 2002
Hitachi, Ltd.
Kenichi Ohhata
H04 - ELECTRIC COMMUNICATION TECHNIQUE