Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5211772 | Wire rod for high strength and high toughness fine steel wire, high strength and high toughness fine steel wire, twisted products using the fine steel wires, and manufacture of the fine steel wire | Nobuhiko Ibaraki, Katsuji Mizutani, Kenji Ochiai | 1993-05-18 |
| 4409026 | Spring steel for vehicles | Yoshiro Yamada, Nobuyasu Hatsuoka | 1983-10-11 |