Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7445680 | Lead-free steel for machine structural use with excellent machinability and low strength anisotropy | Naoki Iwama, Susumu Owaki, Masao Uchiyama, Isao Fujii, Norimasa Tsunekage +4 more | 2008-11-04 |
| 7195736 | Lead-free steel for machine structural use with excellent machinability and low strength anisotropy | Naoki Iwama, Susumu Owaki, Masao Uchiyama, Isao Fujii, Norimasa Tsunekage +4 more | 2007-03-27 |