Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9821428 | Polishing apparatus and method therefor | Yoshinobu Yoshikawa, Yoichi Ishigami, Yoshihiko Higashiguchi, Yuichi Sasaki | 2017-11-21 |
| 9468984 | Broaching device | Yoshihiko Higashiguchi, Yuichi Sasaki, Akio Kambe | 2016-10-18 |
| 9463494 | Cleaning device of porous plate for nuclear power | Yoichi Ishigami, Masato Yamasaki, Yuichi Sasaki | 2016-10-11 |
| 9321110 | Hole drilling process, and drilling tool | Shigeru Okamoto, Yuichi Sasaki | 2016-04-26 |
| 9212881 | Hole examining device | Masaaki Ishii | 2015-12-15 |