Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671649 | Position calculation method and position calculation apparatus | Tomoaki Ishifuji, Takashi Yano, Kenzaburo Fujishima | 2003-12-30 |
| 6657579 | Method for measuring distance and position using spread spectrum signal, and an equipment using the method | Katsuhiko Tsunehara, Nobukazu Doi, Tomoaki Ishifuji | 2003-12-02 |
| 6647276 | Antenna unit and radio base station therewith | Nobukazu Doi, Toshiro Suzuki, Yuji Ishida, Takashi Inoue, Sumaru Niida | 2003-11-11 |
| 6640107 | Wireless location handset apparatus | Katsuhiko Tsunehara | 2003-10-28 |
| 6597678 | Radio communication system using adaptive array antenna | Nobukazu Doi | 2003-07-22 |
| 6556943 | Position calculation method and position calculation apparatus | Tomoaki Ishifuji, Takashi Yano, Kenzaburo Fujishima | 2003-04-29 |