Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8382879 | Copper smelting method | Tatsuya Motomura, Yoshiaki Suzuki, Masaharu Takahashi | 2013-02-26 |
| 6436169 | Method of operating a copper smelting furnace | Yushiro Hirai | 2002-08-20 |