Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8305475 | Solid-state image sensing device and image signal output circuit | Ken Matsumoto, Akihiko Kato | 2012-11-06 |
| 4782514 | Key telephone system | Hironobu Oshikata, Hiroshi Fukushima | 1988-11-01 |
| 4763354 | Key telephone system | Hiroshi Fukushima | 1988-08-09 |
| 4763348 | Controlled power supply for key telephone system | Yoichiro Sano, Akira Sato | 1988-08-09 |
| 4592046 | Subscriber's circuit for time division switching system | Yoshihiro Kawata, Tsunetaka Sakata, Tetsuro Inomata, Hiroyuki Miyashita | 1986-05-27 |
| 4502139 | Howler tone sending-out system in time-division electronic exchanges | — | 1985-02-26 |
| 4380690 | Hybrid circuit | Akira Hirato, Yoshihiro Kawada | 1983-04-19 |