Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6638427 | Waste water treatment method being able to treat surface active agent, nitrogen, hydrogen peroxide and phosphor with high efficiency | Noriyuki Tanaka, Shigeki Matsumoto | 2003-10-28 |
| 6630070 | Wastewater treatment method and wastewater treatment equipment for recycling reactants and unreacted chemicals | Norio Sawai, Kazumi Chujou | 2003-10-07 |
| 6572771 | Waste water treatment method | Kazumi Chujo, Seiji Okamoto, Yukihiro Tao | 2003-06-03 |