Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4798615 | Process for making a filter for molten metal having a high melting point | Shigemi Fukuta, Ken Ugata, Shoichi Yoshino | 1989-01-17 |
| 4247223 | Rock bolt | Koetsu Fukui, Yoshito Seto | 1981-01-27 |