Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D867846 | Screwdriver bit | Koji Dohi | 2019-11-26 |
| D867093 | Screwdriver bit | Koji Dohi | 2019-11-19 |
| 9737977 | Driver bit | Yasuaki Taguchi, Koji Chido, Koji Dohi | 2017-08-22 |
| 9199339 | Pb-free solder alloy | Hiroaki Nagata, Takashi Iseki, Masato Takamori | 2015-12-01 |