Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818981 | Active matrix display device and method for driving the same | Ken-ichi Oki, Satoru Kawai, Ken-ichi Yanai | 1989-04-04 |
| 4807047 | Electro luminescence device and electrophotographic printing system using the same | Seii Sato, Masayuki Wakitani, Tadashi Hasegawa, Shoshin Miura, Shizuo Andoh +5 more | 1989-02-21 |