Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9347115 | Method for recovering rare earth element | Kazunari Maeba, Keiji Kudo, Masatoshi Takano, Hitoshi Ishida, Satoshi Asano +1 more | 2016-05-24 |
| 9068242 | Valuable metal leaching method, and valuable metal collection method employing the leaching method | Hitoshi Ishida, Keiji Kudo, Satoshi Asano | 2015-06-30 |
| 9023130 | Method for separating positive-pole active substance and method for recovering valuable metals from lithium ion battery | Keiji Kudo, Hitoshi Ishida, Satoshi Asano | 2015-05-05 |