Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5707417 | Process of treating garbage with simultaneous production of methane | Shinya Yokoyama, Shigeki Sawayama, Tomoaki Minowa, Seiichi Inoue | 1998-01-13 |
| 5681449 | Process for producing oil from organic material-containing sludge | Shinya Yokoyama, Michio Kuriyagawa, Hideo Kobayashi, Tomoaki Minowa, Seiichi Inoue +1 more | 1997-10-28 |
| 5651953 | Method of producing hydrogen from biomass | Shinya Yokoyama, Tomoaki Minowa, Seiichi Inoue | 1997-07-29 |
| 4935567 | Process for liquefying cellulose-containing biomass | Shinya Yokoyama, Katsuya Koguchi | 1990-06-19 |