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Ibaraki, JP
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last 30 patents
Information
Patent Grant
Plasma arc welding method and plasma arc welding device
Patent number
9,375,802
Issue date
Jun 28, 2016
Hitachi Construction Machinery Co., Ltd.
Kazumichi Hosoya
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Welding method for T-joint
Patent number
8,283,599
Issue date
Oct 9, 2012
Hitachi Construction Machinery Co., Ltd.
Toru Nakajima
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Welding method, welding device, welded joint, and welded structure
Patent number
7,005,607
Issue date
Feb 28, 2006
Hitachi Construction Machinery Co., Ltd.
Toru Takatani
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Method for guiding arc by laser, and arc guiding welding and device...
Patent number
6,596,969
Issue date
Jul 22, 2003
Hitachi Construction Machinery Co., Ltd.
Shigeyuki Sakurai
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Narrow gap welding method and welding apparatus
Patent number
6,534,746
Issue date
Mar 18, 2003
Hetachi Construction Machinery Co., Ltd.
Toru Takatani
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Patents Applications
last 30 patents
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Patent Application
MONITORING METHOD FOR PLASMA ARC WELDING AND PLASMA ARC WELDING DEVICE
Publication number
20140312011
Publication date
Oct 23, 2014
Hitachi Construction Machinery Co., Ltd.
Kazumichi Hosoya
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
PLASMA ARC WELDING METHOD AND PLASMA ARC WELDING DEVICE
Publication number
20140312012
Publication date
Oct 23, 2014
Hitachi Construction Machinery Co., Ltd.
Kazumichi Hosoya
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
APPARATUS FOR TREATING DIESEL ENGINE EXHAUST GAS
Publication number
20120031083
Publication date
Feb 9, 2012
Wataru Minami
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
WELDING METHOD FOR T-JOINT
Publication number
20100176108
Publication date
Jul 15, 2010
Hitachi Construction Machinery Co., Ltd.
Toru Nakajima
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR