Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10941065 | Combined dehydration device | Takeshi Okada, Keisuke Uchimura, Shu Zhang | 2021-03-09 |
| 6773597 | Method and apparatus for reducing excess sludge | Shu Zhang, Kunihiko Miseki | 2004-08-10 |
| 5897771 | Apparatus for aerobic treatment of waste water | — | 1999-04-27 |
| 5672270 | Apparatus for aerobic treatment of waste water | — | 1997-09-30 |