Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8308844 | Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead | Hiroshi Ichikawa, Tetsuharu Ibaraki, Shoji Imura, Hiroshi Oda, Yoichi Abe +2 more | 2012-11-13 |
| 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, Yoichi Abe +2 more | 2011-02-01 |