Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11466349 | Spheroidal graphite cast iron | Takumi Hijii, Hitoshi Sakuma, Gou Nakamura, Zhong-zhi Zhang | 2022-10-11 |
| 10060015 | Steel for high-strength bolts which has excellent delayed fracture resistance and bolt formability, and bolt | Yosuke Matsumoto, Atsushi INADA, Masamichi Chiba, Reiko Kato | 2018-08-28 |