Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4652306 | Method of refining molten steel by arc process | Hirohisa Nakashima, Yoshimi Komatsu, Tsuneo Kondo | 1987-03-24 |
| 4652308 | Process for refining molten steel | Hirohisa Nakashima, Yoshimi Komatsu, Tsuneo Kondo | 1987-03-24 |
| 4552587 | Method of operating ladle refining furnace | Hirohisa Nakashima, Yoshimi Komatsu, Tsuneo Kondo | 1985-11-12 |
| 4551173 | Method for adjusting composition of molten steel in arc process | Hirohisa Nakashima, Yoshimi Komatsu, Tsuneo Kondo | 1985-11-05 |
| 4551174 | Method of refining molten steel by arc process | Hirohisa Nakashima, Yoshimi Komatsu, Tsuneo Kondo | 1985-11-05 |