Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11729868 | Induction heating device, induction heating equipment, induction heating method, and heat treatment method | Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi +3 more | 2023-08-15 |
| 10952288 | Induction heating device, induction heating equipment, induction heating method, and heat treatment method | Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi +3 more | 2021-03-16 |
| 10648052 | Induction hardening apparatus, induction hardening method, induction heating coil, heat treatment apparatus, and heat treatment method | Yoshimasa Tanaka, Yuji Asano | 2020-05-12 |
| 10487387 | Surface nitriding treatment method of titanium material | Jun Komotori, Shumpei Ota, Kengo Fukazawa, Kazuhiro Kawasaki | 2019-11-26 |
| 10458775 | Hardened layer depth measuring apparatus | Kazuhiro Kawasaki, Kenta SAKURAI, Yuji Gotoh | 2019-10-29 |
| 10301692 | Welding method and weld structure | Akira Terajima, Kazuhiro Kawasaki, Fumiaki Ikuta, Yasuyuki KOYATA | 2019-05-28 |
| 10057945 | Induction heating device, induction heating equipment, induction heating method, and heat treatment method | Hitoshi Nakatsu, Masato Yoshioka, Yoshimasa Tanaka, Tsutomu Ito, Kenji Koyanagi +3 more | 2018-08-21 |
| 9534267 | Induction hardening apparatus, induction hardening method, induction heating coil, heat treatment apparatus, and heat treatment method | Yoshimasa Tanaka, Yuji Asano | 2017-01-03 |
| 9304108 | Quenching depth measurement method and quenching depth measurement apparatus | Yuji Gotoh, Noriyoshi Takaoka, Kazuhiro Kawasaki | 2016-04-05 |
| 8545642 | Iron and steel material having quenched surface layer part, method for producing the iron and steel material, and quenched component | Kengo Fukazawa, Kazuhiro Kawasaki, Yoshihiro Ikeda, Masaaki Beppu, Arata Suda | 2013-10-01 |