Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8950651 | Friction joining method and joined structure | Naoki Oiwa, Yasuhiro Otake, Mitsuyoshi Tsunori, Kenji Nakamura, Hiroaki Kawashima | 2015-02-10 |
| 8875980 | Friction stir welding apparatus | Hiroshi Saito, Naoki Oiwa, Tadafumi Kanayama, Satoshi Yamanaka | 2014-11-04 |