Keiji KAWAHARA

Person

Hitachinaka-shi, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Welded construction and resistance welding method
- Patent number 9,095,924
- Issue date Aug 4, 2015
- Hitachi Automotive Systems, Ltd.
- Shin Onose
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Power semiconductor module and power conversion device
- Patent number 9,000,582
- Issue date Apr 7, 2015
- Hitachi Automotive Systems, Ltd.
- Shinji Hiramitsu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Iron core and method of manufacturing the same and apparatus for ma...
- Patent number 8,302,275
- Issue date Nov 6, 2012
- Hitachi, Ltd.
- Atsushi Koshizaka
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fuel injection valve and method for forming orifice thereof
- Patent number 8,016,214
- Issue date Sep 13, 2011
- Hitachi, Ltd.
- Masato Higuma
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Injection valve and method of making orifice
- Patent number 7,874,070
- Issue date Jan 25, 2011
- Hitachi, Ltd.
- Kenichi Gunji
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
Iron core and method of manufacturing the same and apparatus for ma...
- Patent number 7,315,104
- Issue date Jan 1, 2008
- Hitachi, Ltd.
- Atsushi Koshizaka
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fuel injector, nozzle body, and manufacturing method of cylindrical...
- Patent number 6,976,381
- Issue date Dec 20, 2005
- Hitachi, Ltd.
- Atsushi Koshizaka
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Grant
High-frequency communication apparatus and method of manufacturing...
- Patent number 6,710,745
- Issue date Mar 23, 2004
- Hitachi, Ltd.
- Atsushi Koshizaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High-frequency communication apparatus and method of manufacturing...
- Patent number 6,580,395
- Issue date Jun 17, 2003
- Hitachi, Ltd.
- Atsushi Koshizaka
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
JOINED BODY, METHOD OF MANUFACTURING JOINED BODY, AND SHOCK ABSORBER
- Publication number 20240318701
- Publication date Sep 26, 2024
- Hitachi Astemo, Ltd.
- Masato HIGUMA
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
STATOR OF ELECTRIC MOTOR AND MANUFACTURING METHOD FOR STATOR OF ELE...
- Publication number 20230216364
- Publication date Jul 6, 2023
- Hitachi Astemo, Ltd.
- Keiji KAWAHARA
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
POWER SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF THE SAME
- Publication number 20200258823
- Publication date Aug 13, 2020
- Hitachi Automotive Systems, Ltd.
- Takashi KUBOKI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Power Semiconductor Module, Method of Manufacturing Power Semicondu...
- Publication number 20130328185
- Publication date Dec 12, 2013
- Hitachi Automotive Systems, Ltd.
- Shinji Hiramitsu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Welded Construction and Resistance Welding Method
- Publication number 20120156561
- Publication date Jun 21, 2012
- HITACHI VEHICLE ENERGY, LTD.
- Shin ONOSE
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Application
Fuel Injection Valve and Method for Forming Orifice Thereof
- Publication number 20090242668
- Publication date Oct 1, 2009
- Hitachi, Ltd
- Masato Higuma
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Iron Core and Method of Manufacturing the Same and Apparatus for Ma...
- Publication number 20080072415
- Publication date Mar 27, 2008
- Hitachi, Ltd
- Atsushi KOSHIZAKA
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Injection valve and method of making orifice
- Publication number 20070057093
- Publication date Mar 15, 2007
- HITACHI, LTD.
- Kenichi Gunji
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
Iron core and method of manufacturing the same and apparatus for ma...
- Publication number 20050061046
- Publication date Mar 24, 2005
- Atsushi Koshizaka
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
High-frequency transceiver apparatus and method of manufacturing th...
- Publication number 20050014539
- Publication date Jan 20, 2005
- Atsushi Koshizaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
High-frequency communication apparatus and method of manufacturing...
- Publication number 20030122727
- Publication date Jul 3, 2003
- Hitachi, Ltd
- Atsushi Koshizaka
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Fuel injector, nozzle body, and manufacturing method of cylindrical...
- Publication number 20030071147
- Publication date Apr 17, 2003
- Atsushi Koshizaka
- B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
Information Patent Application
High-frequency communication apparatus and method of manufacturing...
- Publication number 20010050644
- Publication date Dec 13, 2001
- Hitachi, Ltd.
- Atsushi Koshizaka
- H01 - BASIC ELECTRIC ELEMENTS

Keiji KAWAHARA

Person

Patents Grantslast 30 patents

Welded construction and resistance welding method

Power semiconductor module and power conversion device

Iron core and method of manufacturing the same and apparatus for ma...

Fuel injection valve and method for forming orifice thereof

Injection valve and method of making orifice

Iron core and method of manufacturing the same and apparatus for ma...

Fuel injector, nozzle body, and manufacturing method of cylindrical...

High-frequency communication apparatus and method of manufacturing...

High-frequency communication apparatus and method of manufacturing...

Patents Applicationslast 30 patents

JOINED BODY, METHOD OF MANUFACTURING JOINED BODY, AND SHOCK ABSORBER

STATOR OF ELECTRIC MOTOR AND MANUFACTURING METHOD FOR STATOR OF ELE...

POWER SEMICONDUCTOR DEVICE AND MANUFACTURING METHOD OF THE SAME

Power Semiconductor Module, Method of Manufacturing Power Semicondu...

Welded Construction and Resistance Welding Method

Fuel Injection Valve and Method for Forming Orifice Thereof

Iron Core and Method of Manufacturing the Same and Apparatus for Ma...

Injection valve and method of making orifice

Iron core and method of manufacturing the same and apparatus for ma...

High-frequency transceiver apparatus and method of manufacturing th...

High-frequency communication apparatus and method of manufacturing...

Fuel injector, nozzle body, and manufacturing method of cylindrical...

High-frequency communication apparatus and method of manufacturing...