Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11491576 | Refill friction stir spot welding method, pressing tool set, and refill friction stir spot welding device | Shunsuke HARUNA, Shintaro FUKADA, Takashi Ninomiya, Masaaki Hirano | 2022-11-08 |
| 11396060 | Holding jig and holding jig set for double-acting friction stir spot welding, double-acting friction stir spot welding device, and double-acting friction stir spot welding method | Masaaki Hirano | 2022-07-26 |