Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12311461 | Friction stir welding tool and friction stir welding method | Yuki TAKEUCHI, Jun Moteki, Hiroki Takeuchi, Yusuke Katsu, Yasushi Hara +1 more | 2025-05-27 |
| 12240052 | Friction pressure welding method | Hidetoshi Fujii, Huihong LIU | 2025-03-04 |
| 12234535 | Weathering steel for solid-state welding, weathering steel material for solid-state welding, solid-state welded structure and solid-state welding method | Hidetoshi Fujii, Kohsaku Ushioda, Tomoya Nagira | 2025-02-25 |
| 11986901 | Friction stir welding tool and friction stir welding method | Hidetoshi Fujii, Yusuke Katsu, Hiroki Takeuchi | 2024-05-21 |
| 11964338 | Method for low-temperature joining of metal materials, and joint structure | Hidetoshi Fujii, Rintaro Ueji | 2024-04-23 |
| 11872651 | Dissimilar material solid phase bonding method, dissimilar material solid phase bonded structure, and dissimilar material solid phase bonding device | Hidetoshi Fujii, Yasuhiro Aoki, Masayoshi Kamai | 2024-01-16 |
| 11813693 | Friction stir welding tool member, and friction stir welding method using the same | Hidetoshi Fujii, Kai FUNAKI, Masahiro Kato, Takayuki Fukasawa, Yutaka Abe | 2023-11-14 |
| 11745287 | Metal material solid-phase bonding method and solid-phase bonding device | Hidetoshi Fujii, Huihong LIU, Yasuhiro Aoki, Masayoshi Kamai | 2023-09-05 |
| 11534854 | Friction stir welding tool and friction stir welding method | Hidetoshi Fujii, Yasuhiro Aoki, Akihiko Ikuta | 2022-12-27 |
| 11273518 | Linear friction welding method | Hidetoshi Fujii, Yasuhiro Aoki, Masanori Yasuyama, Gen MURAYAMA | 2022-03-15 |
| 11161199 | Friction bonding method | Hidetoshi Fujii, Rintaro Ueji | 2021-11-02 |
| 11130194 | Friction stir welding tool member, friction stir welding apparatus using the same, and friction stir welding method | Hidetoshi Fujii, Kai FUNAKI, Isao Ikeda, Yutaka Abe, Masahiro Kato | 2021-09-28 |
| 11110542 | Friction pressure welding method | Hidetoshi Fujii, Yasuhiro Aoki | 2021-09-07 |
| 11097374 | Friction stir welding tool member made of silicon nitride sintered body, and friction stir welding apparatus using the same | Hidetoshi Fujii, Kai FUNAKI, Isao Ikeda, Yutaka Abe, Masahiro Kato | 2021-08-24 |
| 9617613 | Method for manufacturing ferrous material | Hidetoshi Fujii | 2017-04-11 |
| 8998062 | Rotary tool | Hideki Moriguchi, Hiroka Aoyama, Yoshiharu Utsumi, Hidetoshi Fujii | 2015-04-07 |
| 8936186 | Rotary tool | Hiroka Aoyama, Hideki Moriguchi, Yoshiharu Utsumi, Hidetoshi Fujii | 2015-01-20 |
| 8833633 | Rotary tool | Hiroka Miyazaki, Hideki Moriguchi, Yoshiharu Utsumi, Hidetoshi Fujii | 2014-09-16 |
| 7918379 | Process for working metal material and structures | Hidetoshi Fujii, Masao Fukusumi, Takeshi Ishikawa | 2011-04-05 |