Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8807881 | Throwaway rotary cutting tool | Tasuku Itoh, Katsutoshi Watanabe | 2014-08-19 |
| 8714885 | Throwaway rotary cutting tool | Tasuku Itoh, Katsutoshi Watanabe | 2014-05-06 |
| 8257144 | Neck portion grinding apparatus and grinding device employed in the neck portion grinding apparatus | Wataru Aoki, Hirotsugu Takahama, Masakazu Nakamura, Jiro Osawa, Tamotsu Nagai | 2012-09-04 |
| 7618219 | Ball endmill | Jiro Osawa, Wataru Aoki | 2009-11-17 |
| 7478977 | Ball endmill | Jiro Osawa, Wataru Aoki | 2009-01-20 |