Issued Patents All Time
Showing 1–3 of 3 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, Morifumi Nakamura, Akito Shiina, Mikio Hirahara +1 more | 1997-01-21 |
| 5019182 | Method of forming hard steels by case hardening, shot-peening and aging without tempering | — | 1991-05-28 |
| 4971634 | Method of carburizing spheroidizing and quenching | Shinya Shibata, Yoshihisa Miwa, Yoshihiko Kojima | 1990-11-20 |