Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630070 | Wastewater treatment method and wastewater treatment equipment for recycling reactants and unreacted chemicals | Kazuyuki Yamasaki, Norio Sawai | 2003-10-07 |
| 6464874 | Waste water treatment method and waste water treatment apparatus | Kazuyuki Yamasaki, Norio Sawai | 2002-10-15 |