Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11130194 | Friction stir welding tool member, friction stir welding apparatus using the same, and friction stir welding method | Hidetoshi Fujii, Yoshiaki Morisada, Isao Ikeda, Yutaka Abe, Masahiro Kato | 2021-09-28 |
| 11097374 | Friction stir welding tool member made of silicon nitride sintered body, and friction stir welding apparatus using the same | Hidetoshi Fujii, Yoshiaki Morisada, Isao Ikeda, Yutaka Abe, Masahiro Kato | 2021-08-24 |