Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6447600 | Method of removing defects of single crystal material and single crystal material from which defects are removed by the method | Mitsuru Sudou, Tetsuya Nakai, Takao Fujikawa, Takuya Masui | 2002-09-10 |
| 6361625 | High-strength, damage-resistant rail having hardness distribution of excellent damage-resistance at its head top portion | Masahisa Fujikake, Kiyotaka Morioka, Kozo Fukuda, Hideyuki Yamanaka, Kazutaka Kobayashi +1 more | 2002-03-26 |