Kirihara; Seishin
Patent Applications and Registrations
Patent applications and USPTO patent grants for Kirihara; Seishin.The latest application filed is for "high-strength austenitic steel".
- Kirihara; Seishin - Hitachi JP
| Patent | Date |
|---|---|
| High-strength austenitic steel Grant 4,581,067 - Iijima , et al. April 8, 1 | 1986-04-08 |
| Boiler tube Grant 4,505,232 - Usami , et al. March 19, 1 | 1985-03-19 |
| Rotor shaft Grant 4,426,162 - Tsuchiya , et al. January 17, 1 | 1984-01-17 |
| Martensitic heat-resistant steel Grant 4,414,024 - Siga , et al. November 8, 1 | 1983-11-08 |
| Welded structure having improved mechanical strength and process for making same Grant 4,348,131 - Shimanuki , et al. September 7, 1 | 1982-09-07 |
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