Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658257 | Radio communication system, frequency allocation method and frequency allocation device | Tomoaki Hirayama, Tadao Takami | 2003-12-02 |
| 6556552 | Signal strength measurement method and device | Hisashi Nakagomi, Tadao Takami, Akihiro Higashi | 2003-04-29 |