Issued Patents 2022
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11530471 | Rail and method for manufacturing same | Keisuke Ando, Satoshi Igi | 2022-12-20 |
| 11492689 | Rail and method for manufacturing same | Keisuke Ando, Satoshi Igi | 2022-11-08 |
| 11401591 | Method for selecting rail steel and wheel steel | Minoru Honjo, Katsuyuki Ichimiya, Kazukuni Hase | 2022-08-02 |