Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5175405 | Method of automatically welding rails | Kenichi Karimine, Makoto Okumura, Koichi Shinada, Nobuyuki Aoki, Kazuo Nagatomo | 1992-12-29 |
| 4841116 | Process for automatic fusion welding of rails | Akira Kimura, Hiroshi Kashiwabara | 1989-06-20 |