Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5547450 | Hearth roller with suppressed heat crown | Yoshiro Matsumoto, Masaaki Mizuguchi, Yoshimitsu Oshima, Osamu Takatsu | 1996-08-20 |
| 4912295 | Butt welding method | Kazushige Arimochi, Takao Taka | 1990-03-27 |