Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6361625 | High-strength, damage-resistant rail having hardness distribution of excellent damage-resistance at its head top portion | Masahisa Fujikake, Jun Furukawa, Kiyotaka Morioka, Kozo Fukuda, Hideyuki Yamanaka +1 more | 2002-03-26 |