Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5685892 | Metallurgical furnace installation for use in copper smelting process and method for charging anode scrap into furnace | Akiyoshi Yamashiro, Kiyoshi Fujiwara, Nobuhiro Oguma | 1997-11-11 |