Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484093 | Communication route guidance system | Yasuo Ito, Naoki Gorai, Takashi Sugawara, Hiroyuki Yamakawa | 2002-11-19 |
| 6427117 | Navigation method, navigation system, and information communications apparatus used in the navigation system | Yasuo Ito, Naoki Gorai, Takashi Sugawara, Hiroyuki Yamakawa | 2002-07-30 |