Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4434976 | Concentric multi-tube-system nozzle situated beneath the surface of the melt in a refining vessel | Hiroyuki Aoki, Saburo Matsuo, Eiji Ikezaki, Kenji Yamaura | 1984-03-06 |
| 4395283 | Method of switching bottom-blown gases and apparatus therefor | Hukuyosi Isomura, Yoshihiro Koga | 1983-07-26 |
| 4391702 | Method for classification of coals for coke production | Hiroaki Yamanaka, Kazuhiro Yokoyama, Yasuhiro Yone, Tokuji Yamaguchi | 1983-07-05 |
| 4334921 | Converter steelmaking process | Masazumi Hirai, Kazuo Okohira, Hajime Nakagawa | 1982-06-15 |