Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6739495 | Friction stir welding method and component part welded by the method | Hisanori Okamura, Kouji Satou, Masahiko Sakamoto | 2004-05-25 |
| 6722286 | Structure and railway car | Hisanori Okamura, Isao Funyuu, Akihiro Satou, Masakuni Ezumi, Yasuo Ishimaru | 2004-04-20 |
| 6715665 | Friction stir welding method and apparatus, and welded structure | Satoshi Hirano, Hisanori Okamura, Yasuhisa Aono, Kazutaka Okamoto, Tomio Odakura +1 more | 2004-04-06 |
| 6716538 | Structural body formed by friction stir welding | Masakuni Ezumi, Yasuo Ishimaru, Hisanori Okamura, Isao Funyuu, Akihiro Satou | 2004-04-06 |