Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6424289 | Obstacle detection device and obstacle detection system | Tadamasa Fukae, Takashi Kawakami, Hiroyuki Somiya | 2002-07-23 |
| 5390880 | Train traffic control system with diagram preparation | Tatsuya Fukawa | 1995-02-21 |
| 4878049 | Information transmission system for railway vehicles | Hajime Ochiai | 1989-10-31 |
| 4825189 | Train monitoring equipment | Hidetoshi Honma | 1989-04-25 |
| 4817019 | Inspecting apparatus for measuring sensors mounted on train | — | 1989-03-28 |
| 4689602 | Railway car order selecting system | Hidetoshi Homma, Kenji Sunami | 1987-08-25 |
| 4688266 | Car data transmission device for optical fibers | Hajime Ochiai | 1987-08-18 |
| 4682144 | Light transmission system for trains | Hajime Ochiai | 1987-07-21 |
| 4656586 | Automatic vehicle testing apparatus | Hajime Ochiai, Hidetoshi Honma | 1987-04-07 |