Issued Patents 2004
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6793117 | Friction stir welding method, and hollow shape member for friction stir welding | Masakuni Ezumi | 2004-09-21 |
| 6786388 | Friction stir welding method | Masakuni Ezumi, Tsuyoshi Mizusaki | 2004-09-07 |
| 6783055 | Friction stir welding method and rotary tool | Masakuni Ezumi, Hisanori Okamura | 2004-08-31 |
| 6779705 | Friction stir welding method | Masakuni Ezumi, Tetsuya Matsunaga | 2004-08-24 |
| 6745929 | Method of manufacturing structural body and structural body | Masakuni Ezumi, Akihiro Satou | 2004-06-08 |
| 6722555 | Friction stir welding method | Masakuni Ezumi, Tsuyoshi Mizusaki | 2004-04-20 |
| 6705508 | Friction stir welding method, and method for manufacturing car body | Masakuni Ezumi | 2004-03-16 |
| 6698153 | Friction stir welding method, and hollow shape member for friction stir welding | Masakuni Ezumi | 2004-03-02 |