Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7988866 | Method of treating fumed silica-containing drainage water | Shinji Tokunaga, Toshihiko Inoue | 2011-08-02 |
| 7988867 | Method of treating silicon powder-containing drainage water | Shinji Tokunaga, Toshihiko Inoue | 2011-08-02 |