Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8485452 | Guard rail apparatus for guiding derailed wheels | Masaki Seki, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki | 2013-07-16 |
| 8302877 | Wheel guard device | Masaki Seki, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki | 2012-11-06 |
| 8240580 | Ballast retaining structure, bedded track | Masaki Seki, Mikihito Kobayashi, Junichi Koseki | 2012-08-14 |
| 7891577 | Safety device for a train | Masaki Seki, Tomomi Funada, Takaaki Irie, Katsunari Konishi, Tetsuya Hanazaki | 2011-02-22 |