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Masaaki Shigeyama
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Kudamatsu, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Friction stir welding method and group of shape members for frictio...
Patent number
7,601,432
Issue date
Oct 13, 2009
Hitachi, Ltd.
Masakuni Ezumi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Friction stir welding method and group of shape members for frictio...
Patent number
7,121,450
Issue date
Oct 17, 2006
Hitachi, Ltd.
Masakuni Ezumi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Railway car
Patent number
6,651,567
Issue date
Nov 25, 2003
Hitachi, Ltd.
Michifumi Takeichi
B61 - RAILWAYS
Patents Applications
last 30 patents
Information
Patent Application
Friction stir welding method and group of shape members for frictio...
Publication number
20070007321
Publication date
Jan 11, 2007
Masakuni Ezumi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Friction stir welding method and group of shape members for frictio...
Publication number
20050051601
Publication date
Mar 10, 2005
Masakuni Ezumi
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Railway car
Publication number
20020029721
Publication date
Mar 14, 2002
Michifumi Takeichi
B61 - RAILWAYS