Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8951773 | Production method for biofuel | Hiroaki Kato, Ko Yamashita, Yukio Fukushima, Ken Amano, Takashi Kaneko +4 more | 2015-02-10 |
| 5457255 | Catalysts for hydrogenolytic dealkylation and use thereof | Fumio Kumata, Toshihiko Masuda | 1995-10-10 |
| 5277798 | Sewage treatment equipment with activated sludge process bed | — | 1994-01-11 |
| 5240597 | Waste water treatment equipment | — | 1993-08-31 |
| 4927530 | Apparatus for processing sludge | — | 1990-05-22 |
| 4766751 | Apparatus for continuously producing tube having helical grooves in its inner surface | — | 1988-08-30 |
| 4735071 | Apparatus for continuously producing tube having helical grooves in its inner surface | Minobu Sukimoto | 1988-04-05 |
| 4680111 | Sewage treatment equipment with activated sludge process beds | — | 1987-07-14 |
| 4678567 | Activated sludge process bed | — | 1987-07-07 |
| 4446688 | Double twisting machine | — | 1984-05-08 |