Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5084093 | Method for manufacturing molten pig iron | Hideyuki Yamaoka, Takaiku Yamamoto, Hiroaki Ishida | 1992-01-28 |
| 4570909 | Lining apparatus provided with a foldable spray pipe | Nobuyoshi Hiroki, Ryo Michioka, Tsutomu Ueno, Yasuo Kishimoto, Yosisuke Nagano | 1986-02-18 |