Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493936 | Method of making steam turbine blade | Hiroyuki Doi, Shigeyoshi Nakamura, Shinya Imano, Takeshi Onoda | 2002-12-17 |
| 6224334 | Steam turbine, rotor shaft thereof, and heat resisting steel | Masao Siga, Yutaka Fukui, Yoshimi Maeno, Masateru Suwa, Ryoichi Kaneko +5 more | 2001-05-01 |
| 6206634 | Steam turbine blade, method of manufacturing the same, steam turbine power generating plant and low pressure steam turbine | Hiroyuki Doi, Shigeyoshi Nakamura, Shinya Imano, Takeshi Onoda | 2001-03-27 |
| 6174132 | Steam-turbine power plant and steam turbine | Masao Shiga, Ryo Hiraga, Takeshi Onoda, Nobuo Shimizu, Norio Yamada +4 more | 2001-01-16 |
| 6123504 | Steam-turbine power plant and steam turbine | Masao Shiga, Ryo Hiraga, Takeshi Onoda, Nobuo Shimizu, Norio Yamada +4 more | 2000-09-26 |
| 5961284 | High strength heat resisting cast steel, steam turbine casing, steam turbine power plant and steam turbine | Masao Shiga, Kishio Hidaka, Shigeyoshi Nakamura, Yutaka Fukui, Ryo Hiraga +2 more | 1999-10-05 |
| 5749228 | Steam-turbine power plant and steam turbine | Masao Shiga, Ryo Hiraga, Takeshi Onoda, Nobuo Shimizu, Norio Yamada +4 more | 1998-05-12 |
| 5624235 | Steam turbine, rotor shaft thereof, and heat resisting steel | Masao Siga, Yutaka Fukui, Yoshimi Maeno, Masateru Suwa, Ryoichi Kaneko +5 more | 1997-04-29 |
| 5569338 | Steam turbine rotor shaft thereof and heat resisting steel | Masao Siga, Yutaka Fukui, Yoshimi Maeno, Masateru Suwa, Ryoichi Kaneko +5 more | 1996-10-29 |
| 5536146 | Combined generator system | Masao Siga, Yutaka Fukui, Yoshimi Maeno, Masateru Suwa, Ryoichi Kaneko +5 more | 1996-07-16 |
| 5383768 | Steam turbine, rotor shaft thereof, and heat resisting steel | Masao Siga, Yutaka Fukui, Yoshimi Maeno, Masateru Suwa, Ryoichi Kaneko +5 more | 1995-01-24 |
| 5008072 | Heat resistant steel and gas turbine components composed of the same | Masao Siga, Yutaka Fukui, Soichi Kurosawa, Katsumi Iijima, Nobuyuki Iizuka +4 more | 1991-04-16 |
| 4850187 | Gas turbine having components composed of heat resistant steel | Masao Siga, Yutaka Fukui, Soichi Kurosawa, Katsumi Iijima, Nobuyuki Iizuka +4 more | 1989-07-25 |
| 4585478 | Heat resisting steel | Takatoshi Yoshioka, Seishin Kirihara, Masao Siga, Takehiko Yoshida, Takanori Murohoshi | 1986-04-29 |
| 4477280 | Heat resisting steel | Masao Shiga, Seishin Kirihara, Takatoshi Yoshioka, Ryoichi Sasaki | 1984-10-16 |
| 4414024 | Martensitic heat-resistant steel | Masao Siga, Seishin Kirihara, Takatoshi Yosioka, Shintaro Takahashi, Takehiko Yoshida | 1983-11-08 |