Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4837193 | Hydrotreating catalyst and process of manufacture | Ikuo Akizuki, Hiroshi Kaya, Shohei Okano, Nobuo Otake, Yoshihito Kaneko | 1989-06-06 |
| 4812634 | IC card with a solar battery | Satoshi Ohta, Kouzi Tanagawa, Hideo Yamamoto | 1989-03-14 |