Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11454568 | Gas component measuring device | Toshiaki Sugasawa, Ryuji Yamaguchi, Mitsuhito Fujimoto | 2022-09-27 |
| 5189682 | Method for increasing the efficiency of a direct current electric arc furnace | Toshimichi Maki | 1993-02-23 |
| 5138629 | Direct current electric arc furnace | Toshimichi Maki | 1992-08-11 |