Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7892426 | Wastewater treatment apparatus | Hiroshi Hayashi, Hitoshi Takeuchi, Hajime Negishi, Shigeyuki Tsuzaki, Yoshio Aikawa +1 more | 2011-02-22 |
| 7799232 | Method of treating wastewater with reducing water purification material | Hiroshi Hayashi, Hitoshi Takeuchi, Hajime Negishi, Shigeyuki Tsuzaki, Yoshio Aikawa +1 more | 2010-09-21 |
| 7754099 | Reducing water purification material, method for producing reducing water purification material, method for treating wastewater, and wastewater treatment apparatus | Hiroshi Hayashi, Hitoshi Takeuchi, Hajime Negishi, Shigeyuki Tsuzaki, Yoshio Aikawa +1 more | 2010-07-13 |