Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837193 | Hydrotreating catalyst and process of manufacture | Ikuo Akizuki, Shohei Okano, Nobuo Otake, Keiji Kumagai, Yoshihito Kaneko | 1989-06-06 |
| 4833107 | Method for producing nitride-base ceramics | Kozaburo Tamura, Takeshi Isoda | 1989-05-23 |