Issued Patents All Time
Showing 76–78 of 78 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4807853 | Continuous furnace for gas carburizing and hardening | Tsunao Shima, Yoshikazu Shimosato, Akira Yokoyama | 1989-02-28 |
| 4641067 | Motor control method and apparatus therefor | Ryuji Iizawa | 1987-02-03 |
| 4397451 | Furnace for the heat treatment of scale-covered steel | Keizo Kinoshita, Hitoshi Ohta | 1983-08-09 |