Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7198720 | Method of sludge recycling | Tsuguo Inaba, Masaki Sugino, Toshiyuki Nakazawa, Shingo Akiyama, Masahito Yamada +12 more | 2007-04-03 |
| 7141159 | Method of sludge recycling | Tsuguo Inaba, Masaki Sugino, Toshiyuki Nakazawa, Shingo Akiyama, Masahito Yamada +12 more | 2006-11-28 |
| 7094350 | Method of sludge recycling | Tsuguo Inaba, Masaki Sugino, Toshiyuki Nakazawa, Shingo Akiyama, Masahito Yamada +12 more | 2006-08-22 |