Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4706891 | Process for producing high concentration coal-water slurry | Kazuhiko Nakaoji, Hayami Itoh, Shuhei Tatsumi, Shoichi Takao | 1987-11-17 |
| 4593859 | Preparation of deashed high solid concentration coal-water slurry | Kazuhiko Nakaoji, Kunizo Shinano, Takashi Kuwabara, Masazumi Ito, Kaoru Aoki +5 more | 1986-06-10 |
| 4500041 | Process for producing high-concentration slurry of coal | Kazuhiko Nakaoji, Hayami Itoh, Shuhei Tatsumi, Shoichi Takao | 1985-02-19 |