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last 30 patents
Information
Patent Grant
Friction stir welding method and component part welded by the method
Patent number
7,097,091
Issue date
Aug 29, 2006
Hitachi, Ltd.
Hisanori Okamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Friction stir welding method and component part welded by the method
Patent number
6,739,495
Issue date
May 25, 2004
Hitachi, Ltd.
Hisanori Okamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Friction stir welding method
Patent number
6,595,403
Issue date
Jul 22, 2003
Hitachi, Ltd.
Hisanori Okamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Friction stir welding apparatus and method
Patent number
6,299,050
Issue date
Oct 9, 2001
Hitachi, Ltd.
Hisanori Okamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Semiconductor device having thermal stress resistance structure
Patent number
5,621,243
Issue date
Apr 15, 1997
Hitachi, Ltd.
Noboru Baba
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Superconducting magnetic field generating apparatus and method of p...
Patent number
5,231,366
Issue date
Jul 27, 1993
Hitachi, Ltd.
Takashi Haramaki
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Joined body of high-temperature oxide superconductor and method of...
Patent number
5,051,397
Issue date
Sep 24, 1991
Hitachi, Ltd.
Chie Sato
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Patents Applications
last 30 patents
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Patent Application
Friction stir welding method and component part welded by the method
Publication number
20030102354
Publication date
Jun 5, 2003
Hisanori Okamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information
Patent Application
Friction stir welding method and component part welded by the method
Publication number
20030024965
Publication date
Feb 6, 2003
Hisanori Okamura
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
Friction stir welding method
Publication number
20020027155
Publication date
Mar 7, 2002
Hisanori Okamura
B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR