Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7358858 | Road-ice detecting sensor, method for installing same, and road-ice detecting method | Yoshihiro Ozawa, Katsunori Shinoda, Mitsuo Suzuki, Hajime Kato | 2008-04-15 |
| 7291056 | Method and system for cleaning glass surface of pavement light or reflector | Naoyuki Ohishi | 2007-11-06 |