Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5025441 | Key telephone system | Masaharu Kamigaki, Hironobu Oshikata, Yoshihiro Kawata, Nobuyasu Shiga, Hideharu Omori +1 more | 1991-06-18 |
| 4905258 | Data circuit-terminating equipment | Yoshihiro Kawata, Masaharu Kamigaki | 1990-02-27 |
| 4815099 | Data circuit-terminating equipment | Yoshihiro Kawata, Masayuki Kawashima, Hideharu Omori | 1989-03-21 |
| 4805165 | Time division multiplex data transmission method and apparatus | Masataka Kawamura | 1989-02-14 |
| 4694470 | Data transmission circuit | Yoshihiro Kawata | 1987-09-15 |