Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874725 | High-density sintered article of silicon carbid | Mitsuhiko Furukawa, Takashi Kitahira, Kiyohito Misumi | 1989-10-17 |
| 4861142 | Projection type liquid crystal displaying device | Tadahiko Yamaoka, Shingo Takahashi, Tomoaki Takahashi | 1989-08-29 |
| 4796978 | Projection type liquid crystal displaying device | Tadahiko Yamaoka, Shingo Takahashi, Tomoaki Takahashi | 1989-01-10 |