Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886246 | Metal-making apparatus involving the smelting reduction of metallic oxides | Keikichi Murakami, Tsutomu Yamada, Mitsuharu Kishimoto, Kenichi Yajima, Yoshihiko Takemura | 1989-12-12 |