Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7024201 | Mobile communication system | Hiroyuki Tomishima | 2006-04-04 |
| 6778830 | Mobile telecommunication system and channel handoff system between the mobile telecommunication systems | Yasuhiro Oizumi | 2004-08-17 |
| 6424833 | Mobile communication system and a hand-off method thereof | Hiromi Iizuka, Makoto Aihara | 2002-07-23 |
| 6393287 | System for switching speech channel between loosely couple radio base stations | Hiroyuki Munekata | 2002-05-21 |
| 5455963 | Method of switching voice channels in a mobile communication system | Yoshinori Hashimoto | 1995-10-03 |
| 5450473 | Method and arrangement of effectively reducing signal strength measurements for a handoff in a cellular mobile communications system | Kenji Yamaguchi | 1995-09-12 |
| 5436956 | Method and arrangement for reducing the number of handoff requests in a cellular mobile communications system | Eiki Katsuoka | 1995-07-25 |
| 5095530 | Radio telephone system switching control capability of control channels | Shoji Tanaka, Eiki Katsuoka | 1992-03-10 |