Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5094993 | Hydrotreating catalysts | Tadashi Miura, Ikuo Akizuki, Hiroshi Kaya, Takuji Itoh | 1992-03-10 |
| 4837193 | Hydrotreating catalyst and process of manufacture | Ikuo Akizuki, Hiroshi Kaya, Nobuo Otake, Keiji Kumagai, Yoshihito Kaneko | 1989-06-06 |
| 4186078 | Catalyst and process for hydrofining petroleum wax | Takuji Itoh, Satoshi Sakurada, Takashi Obayashi, Takeo Toyoizumi, Osami Iwata | 1980-01-29 |