Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470244 | Train detection system | Kenji Oguma, Atsushi Kawabata, Michio Fujiwara, Shinya Tanifuji | 2002-10-22 |
| 6374165 | Railway information transmission method and system | Kenji Oguma, Atsushi Kawabata, Michio Fujiwara, Shinya Tanifuji | 2002-04-16 |