Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4933024 | Method for manufacturing a high strength rail with good toughness | Kozo Fukuda, Ichiro Nakauchi, Shinichi Nagahashi, Yoshio Saito, Kiyotaka Morioka +4 more | 1990-06-12 |
| 4886558 | Method for heat-treating steel rail head | Toyokazu Teramoto, Akio Fujibayashi, Kozo Fukuda, Mashiro Ueda, Shinichi Nagahashi +5 more | 1989-12-12 |
| 4767475 | Wear resistant rails having capability of preventing propagation of unstable rupture | Kozo Fukuda, Shinichi Nagahashi, Yoshio Saito, Masahiro Ueda, Minoru Tanaka | 1988-08-30 |