Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12312645 | Rail and manufacturing method therefor | Kazuya Tokunaga, Moriyasu Yamaguchi | 2025-05-27 |
| 11453929 | Cooling device and production method for rail | Hideo Kijima, Hiroshi Ishikawa | 2022-09-27 |
| 10563278 | Rail manufacturing method and manufacturing equipment | Hiroyuki Fukuda, Hideo Kijima, Moriyasu Yamaguchi | 2020-02-18 |
| 10472693 | Head hardened rail manufacturing method and manufacturing apparatus | Hideo Kijima, Hiroyuki Fukuda | 2019-11-12 |
| 10214795 | Rail manufacturing method and manufacturing equipment | Hiroyuki Fukuda, Hideo Kijima, Moriyasu Yamaguchi | 2019-02-26 |