Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12312645 | Rail and manufacturing method therefor | Kenji Okushiro, Kazuya Tokunaga | 2025-05-27 |
| 10563278 | Rail manufacturing method and manufacturing equipment | Kenji Okushiro, Hiroyuki Fukuda, Hideo Kijima | 2020-02-18 |
| 10253397 | Pearlitic rail and method for manufacturing pearlitic rail | Tatsumi Kimura, Kiyoshi Uwai, Shigeru Endo | 2019-04-09 |
| 10214795 | Rail manufacturing method and manufacturing equipment | Kenji Okushiro, Hiroyuki Fukuda, Hideo Kijima | 2019-02-26 |