Issued Patents 1997
Showing 1–2 of 2 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 |