Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9615895 | Dental polishing instrument | Naoki Yumiyama, Osamu Asao, Masahiko Iwata | 2017-04-11 |
| D663031 | Dental rotary instruments | Osamu Asao, Masako Shigezawa | 2012-07-03 |
| D662590 | Dental rotary instruments | Osamu Asao, Masako Shigezawa | 2012-06-26 |
| D641472 | Dental rotary instrument | Osamu Asao, Masako Shigezawa | 2011-07-12 |