Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9251789 | Speech-recognition system, storage medium, and method of speech recognition | — | 2016-02-02 |
| 6361625 | High-strength, damage-resistant rail having hardness distribution of excellent damage-resistance at its head top portion | Masahisa Fujikake, Jun Furukawa, Kozo Fukuda, Hideyuki Yamanaka, Kazutaka Kobayashi +1 more | 2002-03-26 |
| 4933024 | Method for manufacturing a high strength rail with good toughness | Kozo Fukuda, Tsunemi Wada, Ichiro Nakauchi, Shinichi Nagahashi, Yoshio Saito +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 |