ME

Masakuni Ezumi

HI Hitachi: 61 patents #158 of 28,497Top 1%
Overall (All Time): #37,090 of 4,157,543Top 1%
62
Patents All Time

Issued Patents All Time

Showing 1–25 of 62 patents

Patent #TitleCo-InventorsDate
7601432 Friction stir welding method and group of shape members for friction stir welding Masaaki Shigeyama, Tetsuya Matsunaga 2009-10-13
7243471 Friction stir welding method, and hollow shape member for friction stir welding Kazushige Fukuyori 2007-07-17
7121450 Friction stir welding method and group of shape members for friction stir welding Masaaki Shigeyama, Tetsuya Matsunaga 2006-10-17
7051916 Friction stir welding method Kazushige Fukuyori, Akihiro Satou 2006-05-30
7036707 Friction stir welding method, frame members used therein, and product formed thereby Kinya Aota, Yasuo Ishimaru, Hisanori Okamura, Isao Funyuu, Akihiro Satou 2006-05-02
6997369 Friction stir welding method Koji Hamada, Ryoji Ishida 2006-02-14
6984455 Friction stir welding method, and method for manufacturing car body Kazushige Fukuyori 2006-01-10
6936332 Extruded frame member for use in friction stir welding Kinya Aota, Yasuo Ishimaru, Hisanori Okamura, Isao Funyuu, Akihiro Satou 2005-08-30
6793117 Friction stir welding method, and hollow shape member for friction stir welding Kazushige Fukuyori 2004-09-21
6786388 Friction stir welding method Kazushige Fukuyori, Tsuyoshi Mizusaki 2004-09-07
6783055 Friction stir welding method and rotary tool Kazushige Fukuyori, Hisanori Okamura 2004-08-31
6779705 Friction stir welding method Kazushige Fukuyori, Tetsuya Matsunaga 2004-08-24
6779706 Frame member for friction stir welding Kazusige Fukuyori, Yoshihiko Ina, Tetsuya Matsunaga 2004-08-24
6777107 Structural body formed by friction stir welding Akihiro Satou, Kazusige Fukuyori 2004-08-17
6745929 Method of manufacturing structural body and structural body Akihiro Satou, Kazushige Fukuyori 2004-06-08
6733900 Car body formed by friction stir welding Akihiro Satou, Kazusige Fukuyori 2004-05-11
6722555 Friction stir welding method Kazushige Fukuyori, Tsuyoshi Mizusaki 2004-04-20
6722286 Structure and railway car Hisanori Okamura, Isao Funyuu, Akihiro Satou, Kinya Aota, Yasuo Ishimaru 2004-04-20
6719184 Nondestructive inspection method Ryooji Ishida, Tsuyoshi Fujii, Masami Ogata 2004-04-13
6716538 Structural body formed by friction stir welding Kinya Aota, Yasuo Ishimaru, Hisanori Okamura, Isao Funyuu, Akihiro Satou 2004-04-06
6705508 Friction stir welding method, and method for manufacturing car body Kazushige Fukuyori 2004-03-16
6698153 Friction stir welding method, and hollow shape member for friction stir welding Kazushige Fukuyori 2004-03-02
6691484 Hollow extruded frame member for friction stir welding and structure body formed therefrom Akihiro Satou, Kazusige Fukuyori, Takeshi Kawasaki 2004-02-17
6659330 Friction stir welding method, and method for manufacturing car body Kazushige Fukuyori 2003-12-09
6640515 Frame member used in friction stir welding Kinya Aota, Yasuo Ishimaru, Hisanori Okamura, Isao Funyuu, Akihiro Satou 2003-11-04