Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6671649 | Position calculation method and position calculation apparatus | Mikio Kuwahara, 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, Mikio Kuwahara | 2003-12-02 |
| 6570490 | Contactless IC card | Takeshi Saitoh, Masaaki Shida | 2003-05-27 |
| 6556943 | Position calculation method and position calculation apparatus | Mikio Kuwahara, Takashi Yano, Kenzaburo Fujishima | 2003-04-29 |
| 6527177 | Automatic identification equipment and IC cards | Masaaki Shida | 2003-03-04 |
| 6508400 | Automatic identification equipment and IC cards | Masaaki Shida | 2003-01-21 |