Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6494011 | Hollow extruded frame member for friction stir welding | Masakuni Ezumi, Akihiro Satou, Takeshi Kawasaki | 2002-12-17 |
| 6474533 | Friction stir welding method | Masakuni Ezumi, Yoshihiko Ina, Tetsuya Matsunaga | 2002-11-05 |
| 6471112 | Friction stir welding method | Akihiro Satou, Masakuni Ezumi | 2002-10-29 |
| 6422449 | Method of mending a friction stir welding portion | Masakuni Ezumi, Akihiro Satou | 2002-07-23 |