Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698159 | Long-life carburizing bearing steel | Yuji Kawauchi | 1997-12-16 |
| 5601667 | Process for producing hot forged steel having excellent fatigue strength, yield strength, and machinability | Toshihiko Takahashi, Fusao Ishikawa | 1997-02-11 |
| 5545267 | Steel product for induction-hardened shaft component and shaft component using the same | Yoshiro Koyasu | 1996-08-13 |
| 5252153 | Process for producing steel bar wire rod for cold working | Yoshiro Koyasu, Yukio Noguchi | 1993-10-12 |