Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7431834 | Waste water and sludge treatment apparatus | Kazuaki Shimamura, Takao Hagino, Hideyuki Ishikawa | 2008-10-07 |
| 7297275 | Biomembrane filtration apparatus and method | Atsushi Kobayashi | 2007-11-20 |
| 7264715 | Apparatus for treating organic wastewater and sludge | Takao Hagino, Hideyuki Yoshida, Masaaki Nishimoto, Kazuaki Shimamura | 2007-09-04 |
| 6562244 | Method and apparatus for disinfecting drainage | Yoshiharu Yasuhara, Kazuhiro Hasegawa, Kazunari Tanaka, Yutaka Niida, Hideyuki Yoshida +5 more | 2003-05-13 |
| 6482320 | Solid-liquid separator | Sakae Kosanda, Yutaka Niida, Koichi Masuda, Seiichi Tsuda | 2002-11-19 |