Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5799353 | Toothbrush | Atsushi Yamamoto | 1998-09-01 |
| D387206 | toothbrush head | Atsushi Yamamoto | 1997-12-09 |
| D383608 | Toothbrush | Atsushi Yamamoto | 1997-09-16 |
| D359623 | Toothbrush | Atsushi Kinoshita, Kenji Sumiyama | 1995-06-27 |