Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835230 | Method for leaching zinc concentrate | Yoshiyuki Watanabe, Kaoru Saruta, Akira Narumi | 2004-12-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6835230 | Method for leaching zinc concentrate | Yoshiyuki Watanabe, Kaoru Saruta, Akira Narumi | 2004-12-28 |