Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4910511 | Radio pager having local- and wide-area reception modes | Koichi Nagata | 1990-03-20 |
| 4639726 | Radio communication apparatus disabled on reception of a predetermined signal | Yoshio Ichikawa, Masaaki Akahori, Daisuke Ishii, Kazuyuki Tsunoda, Koichi Nagata | 1987-01-27 |