Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6224334 | Steam turbine, rotor shaft thereof, and heat resisting steel | Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Yoshimi Maeno, Masateru Suwa +5 more | 2001-05-01 |
| 5624235 | Steam turbine, rotor shaft thereof, and heat resisting steel | Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Yoshimi Maeno, Masateru Suwa +5 more | 1997-04-29 |
| 5569338 | Steam turbine rotor shaft thereof and heat resisting steel | Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Yoshimi Maeno, Masateru Suwa +5 more | 1996-10-29 |
| 5536146 | Combined generator system | Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Yoshimi Maeno, Masateru Suwa +5 more | 1996-07-16 |
| 5383768 | Steam turbine, rotor shaft thereof, and heat resisting steel | Masao Siga, Yutaka Fukui, Mitsuo Kuriyama, Yoshimi Maeno, Masateru Suwa +5 more | 1995-01-24 |
| 5027268 | System for administering life of plant | Shigeo Sakurai, Hiroshi Miyata, Ryoichi Kaneko | 1991-06-25 |
| 4504554 | Rotor shaft of steam turbine | Takatoshi Yoshioka, Seishin Kirihara, Masao Siga, Takehiko Yoshida, Katsukuni Hisano +1 more | 1985-03-12 |
| 4497670 | Rotor shaft and manufacturing method thereof | Masao Siga, Seishin Kirihara, Takatoshi Yoshioka, Katsukuni Hisano, Yoji Akutsu +1 more | 1985-02-05 |
| 4426162 | Rotor shaft | Keiichi Tsuchiya, Katsukuni Hisano, Masahiro Kobayashi, Kei Kobayashi, Kazuhiko Ueda +3 more | 1984-01-17 |
| 4342542 | Moving blade of steam turbine | Katsukuni Hisano, Takao Mizoi | 1982-08-03 |
| 4321012 | Turbine blade fastening construction | Katsukuni Hisano | 1982-03-23 |