Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7879132 | Method for reduction treatment of metal oxide or ironmaking waste and method for concentration and recovery zinc and/or lead | Hiroshi Ichikawa, Tetsuharu Ibaraki, Shoji Imura, Hiroshi Oda, Shigeki Takahashi +2 more | 2011-02-01 |