Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4762526 | Process for deashing coal | Taiichi Funaji, Haruo Iso, Kenichi Nagata, Toshiaki Murata, Hideto Mitsui | 1988-08-09 |
| 4420445 | Coal pellets production | Sueshi Yamamoto, Kenichi Nagata, Yoshiharu Takebe | 1983-12-13 |