Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5911842 | Heat resisting steel and steam turbine rotor shaft and method of making thereof | Masao Shiga, Kishio Hidaka, Norio Yamada, Shigeyoshi Nakamura, Yutaka Fukui +6 more | 1999-06-15 |
| 4404041 | Method of producing elongated large-size forged article | Kimihiko Akahori, Shigeo Maeno, Hideyo Kodama | 1983-09-13 |