Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9631259 | Method for producing aqueous solution of perrhenic acid from rhenium sulfide | Ikunobu Sumida, Yuji Kawano | 2017-04-25 |
| 9624561 | Method for producing aqueous solution of perrhenic acid from rhenium sulfide | Ikunobu Sumida, Yuji Kawano | 2017-04-18 |
| 7955409 | Method of smelting copper | Kenta Nakakado, Seiichi Watanabe | 2011-06-07 |
| 7918917 | Method of smelting copper | Kenta Nakakado, Seiichi Watanabe | 2011-04-05 |