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Tokai, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Gate drive circuit of the voltage drive type semiconductor element...
Patent number
8,614,568
Issue date
Dec 24, 2013
Hitachi, Ltd.
Junpei Uruno
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Buck-boost DC-DC converter with auxiliary inductors for zero curren...
Patent number
8,207,717
Issue date
Jun 26, 2012
Hitachi, Ltd.
Junpei Uruno
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
DC-DC converter
Patent number
8,203,322
Issue date
Jun 19, 2012
Hitachi, Ltd.
Toshikazu Okubo
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Unidirectional DC-DC converter
Patent number
7,557,546
Issue date
Jul 7, 2009
Hitachi, Ltd.
Junpei Uruno
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Soft switching DC-DC converter including a buck converter and a boo...
Patent number
7,551,462
Issue date
Jun 23, 2009
Hitachi, Ltd.
Junpei Uruno
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Car-mounted igniter using IGBT
Patent number
7,051,724
Issue date
May 30, 2006
Hitachi, Ltd.
Junpei Uruno
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
Information
Patent Application
GATE DRIVE CIRCUIT OF THE VOLTAGE DRIVE TYPE SEMICONDUCTOR ELEMENT...
Publication number
20110228564
Publication date
Sep 22, 2011
Hitachi, Ltd.
Junpei URUNO
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
DC-DC Converter And Its Controlling Method
Publication number
20110013437
Publication date
Jan 20, 2011
Junpei Uruno
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
DC-DC CONVERTER
Publication number
20100061122
Publication date
Mar 11, 2010
Hitachi, Ltd.
Toshikazu OKUBO
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
DC-DC Converter and Its Controlling Method
Publication number
20080100273
Publication date
May 1, 2008
Junpei Uruno
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
UNIDERECTIONAL DC-DC CONVERTER
Publication number
20070236966
Publication date
Oct 11, 2007
Junpei Uruno
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Application
Soft switching DC-DC converter
Publication number
20060176719
Publication date
Aug 10, 2006
Junpei Uruno
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Application
Car-mounted igniter using igbt
Publication number
20040216724
Publication date
Nov 4, 2004
Junpei Uruno
F02 - COMBUSTION ENGINES HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS