Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872885 | Dispersant for aqueous slurry of carbonaceous solid and aqueous carbonaceous solid slurry composition incorporating said dispersant therein | Tsuneo Tsubakimoto, Hayami Ito, Yoshihiro Kajibata, Shoichi Takao, Takakiyo Goto +4 more | 1989-10-10 |
| 4712742 | Preparation of deashed high solid concentration coal-water slurry | Takayuki Ogawa, Hideaki Ito, Naokazu Kimura, Hayami Ito, Shoichi Takao +5 more | 1987-12-15 |
| 4706891 | Process for producing high concentration coal-water slurry | Kazuhiko Nakaoji, Mitsugu Kamao, Hayami Itoh, Shoichi Takao | 1987-11-17 |
| 4593859 | Preparation of deashed high solid concentration coal-water slurry | Kazuhiko Nakaoji, Mitsugu Kamao, Kunizo Shinano, Takashi Kuwabara, Masazumi Ito +5 more | 1986-06-10 |
| 4500041 | Process for producing high-concentration slurry of coal | Kazuhiko Nakaoji, Mitsugu Kamao, Hayami Itoh, Shoichi Takao | 1985-02-19 |