Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5431892 | Process for recovering valuable metal from waste catalyst | Kenji Kirishima, Haruo Shibayama, Hideo Hanawa | 1995-07-11 |
| 5415849 | Process for dissolving used catalyst | Kenji Kirishima, Haruo Shibayama, Yuji Nakano, Hisaaki Shimauchi, Ichiro Matsunaga | 1995-05-16 |