Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7029625 | Continuous vacuum carburizing furnace | Seiji Yoshimoto | 2006-04-18 |
| 6723188 | Steel workpiece oil quenching method | Saburo Ogawa, Kiyohiro Miyamoto | 2004-04-20 |
| 6221190 | Method and apparatus for processing glass panel | Tadashi Seki | 2001-04-24 |
| 4836864 | Method of gas carburizing and hardening | Koji Murakami, Tsunao Shima, Akira Yokoyama | 1989-06-06 |
| 4807853 | Continuous furnace for gas carburizing and hardening | Koji Murakami, Tsunao Shima, Akira Yokoyama | 1989-02-28 |
| 4627814 | Continuous type atmosphere heat treating furnace | Fumihiko Hattori | 1986-12-09 |
| 4449923 | Continuous heat-treating furnace | — | 1984-05-22 |