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, Tomoko Ogi, Shigeki Sawayama, Seiichi Inoue | 1998-01-13 |
| 5681449 | Process for producing oil from organic material-containing sludge | Shinya Yokoyama, Michio Kuriyagawa, Tomoko Ogi, Hideo Kobayashi, Seiichi Inoue +1 more | 1997-10-28 |
| 5651953 | Method of producing hydrogen from biomass | Shinya Yokoyama, Tomoko Ogi, Seiichi Inoue | 1997-07-29 |
| 5476787 | Method of removing nitrogen impurities from water using hydrocarbon-producing microalga | Shinya Yokoyama, Shigeki Sawayama, Yutaka Dote | 1995-12-19 |