Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4689800 | Method of melting raw material with an electric arc furnace | Shigeru Hanada, Hiroya Nakata | 1987-08-25 |
| 4607374 | Method for controlling arc furnace | Kikuma Izumi | 1986-08-19 |
| 4514218 | Reduced iron melting method using electric arc furnace | — | 1985-04-30 |