Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8551337 | Treatment equipment of organic waste and treatment method | Koichi Doi, Katsuhiro Tsubai | 2013-10-08 |
| 8043505 | Treatment equipment of organic waste and treatment method | Koichi Doi, Katsuhiro Tsubai | 2011-10-25 |
| 5166376 | Process for refining vegetable oil | Shigemi Suzuki, Nobuyuki Maebashi, Shigeru Yamano, Hiashi Nogaki, Akio Tamaki | 1992-11-24 |