Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6217678 | Steel wire rod or bar with good cold deformability and machine parts made thereof | Hideo Hata, Toyofumi Hasegawa | 2001-04-17 |
| 5846344 | Spring steel of high strength and high corrosion resistance | Yasunobu Kawaguchi, Masataka Shimotsusa, Takenori Nakayama, Shigeaki Miyauchi, Yoshinori Yamamoto +1 more | 1998-12-08 |
| 5508002 | Spring steel of high strength and high corrosion resistance | Yasunobu Kawaguchi, Masataka Shimotsusa, Takenori Nakayama, Shigeaki Miyauchi, Yoshinori Yamamoto +1 more | 1996-04-16 |