Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4674101 | Arc-heating type extra-furnace refining apparatus | Teruyuki Hasegawa, Seigo Kuwano, Ryuji Yamaguchi, Akio Shiwata, Yoneichi Hamada +5 more | 1987-06-16 |
| 4650517 | Method of heating molten steel by arc process | Teruyuki Hasegawa, Seigo Kuwano, Ryuji Yamaguchi | 1987-03-17 |