Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4608464 | Interface circuit interconnecting a bidirectional two-wire line with unidirectional four-wire lines | Hirohiko Sato, Eiichi Amada, Toshiro Suzuki, Hirotoshi Shirasu, Hiroshi Kuwahara | 1986-08-26 |
| 4558185 | Subscriber line interface circuit with complex impedance | Kazuo Saito, Eiichi Amada, Hirotoshi Shirasu | 1985-12-10 |