Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826474 | Communication navigation system and method, communication center apparatus, communication navigation terminal, program storage device and computer data signal embodied in carrier wave | Akira Sakai, Ippei Nambata, Masaya Hashida, Toru Fujita | 2004-11-30 |
| 6778901 | Communication navigation system, communication navigation method, terminal unit, and route guidance information transmitting apparatus | Akira Nagamune | 2004-08-17 |
| 6766248 | Satellite navigation system of which map data are partially updateable | — | 2004-07-20 |
| 6704649 | Satellite navigation system of which map data are partially updateable | — | 2004-03-09 |