Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5626817 | Austenitic heat resistant steel excellent in elevated temperature strength | Yoshiatsu Sawaragi | 1997-05-06 |
| 5591391 | High chromium ferritic heat-resistant steel | Masaaki Igarashi, Kaori Miyata | 1997-01-07 |