Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4585478 | Heat resisting steel | Seishin Kirihara, Masao Siga, Mitsuo Kuriyama, Takehiko Yoshida, Takanori Murohoshi | 1986-04-29 |
| 4581067 | High-strength austenitic steel | Katsumi Iijima, Norio Yamada, Seishin Kirihara, Masao Shiga, Masayuki Sukekawa +1 more | 1986-04-08 |
| 4566810 | Steam turbine rotor shaft | Seishin Kirihara, Masao Shiga, Katsumi Iijima, Katsukuni Hisano, Ryoichi Kaneko | 1986-01-28 |
| 4504554 | Rotor shaft of steam turbine | Seishin Kirihara, Masao Siga, Takehiko Yoshida, Katsukuni Hisano, Toshimi Tan +1 more | 1985-03-12 |
| 4497670 | Rotor shaft and manufacturing method thereof | Masao Siga, Seishin Kirihara, Katsukuni Hisano, Toshimi Tan, Yoji Akutsu +1 more | 1985-02-05 |
| 4477280 | Heat resisting steel | Masao Shiga, Seishin Kirihara, Mitsuo Kuriyama, Ryoichi Sasaki | 1984-10-16 |
| 4426162 | Rotor shaft | Keiichi Tsuchiya, Katsukuni Hisano, Toshimi Tan, Masahiro Kobayashi, Kei Kobayashi +3 more | 1984-01-17 |