Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849660 | BICMOS output interface circuit for level-shifting ECL to CMOS | Kenichi Ishibashi, Toshio Doi | 1989-07-18 |
| 4803527 | Semiconductor integrated circuit device having semi-insulator substrate | Yasushi Hatta, Kazumichi Mitsusada, Hirotoshi Tanaka | 1989-02-07 |