Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5244130 | Molten steel pouring nozzle | Hidekichi Ozeki, Takafumi Aoki | 1993-09-14 |
| 4735859 | Magnesia aggregate for refractory article and method for manufacturing same | Susumu Ushigome | 1988-04-05 |