Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6774817 | Reflection multiplier radio wave marker system and traffic system | Yoshihiko Tanji | 2004-08-10 |
| 6577246 | Electromagnetic wave lane marker, device for detecting electromagnetic wave lane marker, and traffic system | Yoshihiko Tanji, Akira Nakatsuka | 2003-06-10 |