Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7235174 | Method of sludge recycling | P. Chang, Masaki Sugino, Toshiyuki Nakazawa, Shingo Akiyama, Chiyomitsu Kimura +12 more | 2007-06-26 |
| 7198720 | Method of sludge recycling | Tsuguo Inaba, Masaki Sugino, Toshiyuki Nakazawa, Shingo Akiyama, Chiyomitsu Kimura +12 more | 2007-04-03 |
| 7141159 | Method of sludge recycling | Tsuguo Inaba, Masaki Sugino, Toshiyuki Nakazawa, Shingo Akiyama, Chiyomitsu Kimura +12 more | 2006-11-28 |
| 7094350 | Method of sludge recycling | Tsuguo Inaba, Masaki Sugino, Toshiyuki Nakazawa, Shingo Akiyama, Chiyomitsu Kimura +12 more | 2006-08-22 |