Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7972502 | Aeration-less water treatment apparatus | Masahiko Tsutsumi, Takumi Obara, Nobuyuki Ashikaga, Hiroshi Tamura | 2011-07-05 |
| 7901582 | Phosphorus recovery method and phosphorus recovery system | Hidetake Shiire, Nobuyuki Ashikaga, Satoshi Haraguchi, Tokusuke Hayami, Tatsuoki Kono +2 more | 2011-03-08 |