Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591478 | Desiccant, method for producing the same and method for using the same | Takahisa Tokunaga, Junko Kajihara, Masao Hirayama, Hidemasa Hidaka, Masao Hayashitani +2 more | 1997-01-07 |
| 4706891 | Process for producing high concentration coal-water slurry | Kazuhiko Nakaoji, Mitsugu Kamao, Shuhei Tatsumi, Shoichi Takao | 1987-11-17 |
| 4657561 | Method of recovering fuel from coal ash | Chiaki Nagai | 1987-04-14 |
| 4500041 | Process for producing high-concentration slurry of coal | Kazuhiko Nakaoji, Mitsugu Kamao, Shuhei Tatsumi, Shoichi Takao | 1985-02-19 |