Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4735859 | Magnesia aggregate for refractory article and method for manufacturing same | Kikuo Ariga | 1988-04-05 |
| 4266970 | Method for blowing gas from below into molten steel in refining vessel | Shoji Iwaoka, Hiroyuki Kaito, Shigeo Anzai, Yoshiaki Watanabe, Nobuyuki Mimura | 1981-05-12 |