Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5228035 | Synchronizing system in digital communication line | Akira Hirato, Yuji Kondo, Naoyuki Yamaguchi, Koichi Ichimura, Yoshihiro Kawata | 1993-07-13 |
| 5025441 | Key telephone system | Masaharu Kamigaki, Hironobu Oshikata, Yoshihiro Kawata, Nobuyasu Shiga, Masayuki Kawashima +1 more | 1991-06-18 |
| 4815099 | Data circuit-terminating equipment | Toshimichi Shimatani, Yoshihiro Kawata, Masayuki Kawashima | 1989-03-21 |
| 4726013 | Time division multiplex telecommunications system and method for a key telephone system or the like | Masayuki Kawashima | 1988-02-16 |