Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6464874 | Waste water treatment method and waste water treatment apparatus | Kazuyuki Yamasaki, Kazumi Chujou | 2002-10-15 |
| 6344142 | Waste water treatment method and apparatus | Kazuyuki Yamasaki, Kazumi Chujo | 2002-02-05 |