Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6722286 | Structure and railway car | Hisanori Okamura, Isao Funyuu, Akihiro Satou, Kinya Aota, Masakuni Ezumi | 2004-04-20 |
| 6716538 | Structural body formed by friction stir welding | Kinya Aota, Masakuni Ezumi, Hisanori Okamura, Isao Funyuu, Akihiro Satou | 2004-04-06 |