Issued Patents 1989
Showing 1–1 of 1 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, Shuhei Tatsumi, Shoichi Takao, Takakiyo Goto +4 more | 1989-10-10 |