Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5595610 | Method of manufacturing case-hardened parts with little distortion in heat treatment and superior strength in bending fatigue | Hisao Maeda, Yoshitake Matsushima, Akito Shiina, Mikio Hirahara, Yukio Arimi +1 more | 1997-01-21 |