Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650024 | Martensitic heat-resisting steel excellent in HAZ-softening resistance and process for producing the same | Yasushi Hasegawa, Masahiro Ohgami, Hisashi Naoi, Toshio Fujita | 1997-07-22 |