Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11452963 | Dust collector | Hiroshi Tanaka, Shigeo Fujita, Hidetoshi Hashizume | 2022-09-27 |
| 11401591 | Method for selecting rail steel and wheel steel | Tatsumi Kimura, Katsuyuki Ichimiya, Kazukuni Hase | 2022-08-02 |