Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4997801 | Catalyst for hydrotreating hydrocarbons | Yukuaki Mitarai, Yasuhito Takahashi, Tomio Kawaguchi, Shigeru Sakai | 1991-03-05 |
| 4950633 | Catalyst for hydrotreating coal liquefaction and circulation solvent | Toshio Yamaguchi, Kikoo Uekusa, Eiji Funatsu, Katsuzo Shiraishi, Yukuaki Mitarai | 1990-08-21 |