Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4868874 | Echo canceller | Motohiro Kokumai, Tatsuko Shinozuka | 1989-09-19 |
| 4687998 | Pulse width generating circuit synchronized with clock signal and corresponding to a reference voltage | Toshiro Suzuki, Osamu Matsubara, Izuru Yamada | 1989-08-18 |
| 4841521 | Method and system for bidirectionally transmitting data | Eiichi Amada, Hirotoshi Shirasu, Tohru Kazawa, Toshiro Suzuki, Takanori Miyamoto +1 more | 1989-06-20 |
| 4835482 | Semiconductor integrated circuit forming a switched capacitor filter | Masashi Tamakoshi, Toshiro Suzuki | 1989-05-30 |
| 4833691 | Line equalizer | Osamu Matsuhara, Seiichi Yamano | 1989-05-23 |