Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4434976 | Concentric multi-tube-system nozzle situated beneath the surface of the melt in a refining vessel | Shozo Murakami, Hiroyuki Aoki, Saburo Matsuo, Eiji Ikezaki | 1984-03-06 |