Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5759299 | Rail having excellent resistance to rolling fatigue damage and rail having excellent toughness and wear resistance and method of manufacturing the same | Hiroyasu Yokoyama, Kazutaka Kobayashi | 1998-06-02 |
| 5676772 | High-strength, bainitic steel rail having excellent damage-resistance | Kazutaka Kobayashi, Masahisa Fujikake | 1997-10-14 |
| 4528046 | Method of manufacturing austenitic stainless steel plates | Chiaki Ouchi | 1985-07-09 |