Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5728348 | Ladle cover for vacuum refining process | Nozomu Tamura, Sumio Yamada, Masaru Washio | 1998-03-17 |
| 4238121 | Hearth structure of an oxygen-bottom-blowing converter | Akira Harita, Tadashi Morimoto, Ryoji Uchimura | 1980-12-09 |