Issued Patents All Time
Showing 51–53 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4581067 | High-strength austenitic steel | Norio Yamada, Seishin Kirihara, Masao Shiga, Masayuki Sukekawa, Takatoshi Yoshioka +1 more | 1986-04-08 |
| 4566810 | Steam turbine rotor shaft | Takatoshi Yoshioka, Seishin Kirihara, Masao Shiga, Katsukuni Hisano, Ryoichi Kaneko | 1986-01-28 |
| 4443406 | Heat-resistant and corrosion-resistant weld metal alloy and welded structure | Masayuki Sukekawa, Yoshimitsu Tobita, Seishin Kirihara, Hisashi Morimoto, Kenichi Usami | 1984-04-17 |