Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6252502 | Alarm detection apparatus | Masaki Kubo, Shigeyuki Kobayashi, Junichi Ishiwatari, Shuniti Nakayama, Hideo Sunaga +1 more | 2001-06-26 |
| 5627826 | Time-slot interchanger | Yukio Suda, Toshiaki Ookubo, Hiroshi Yoshida | 1997-05-06 |