Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5640156 | Mobile communication method | Koichi Yagi | 1997-06-17 |
| 5602375 | Automatic debiting system suitable for free lane traveling | Shuichi Sunahara, Souichi Ishikawa, Hajime Amano, Kouichi Yagi, Masanori Omae | 1997-02-11 |