Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11045920 | Machining apparatus | Hirokazu Okubo, Kenichiro Kitamura | 2021-06-29 |
| 9873177 | Machining apparatus | Kenji Ohgaki, Fumikazu Hirakawa | 2018-01-23 |
| 9637803 | Annular workpiece quenching method and quenching apparatus used in the method | Tetsurou Hirano | 2017-05-02 |