Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D547785 | Digital camera | — | 2007-07-31 |
| 4811487 | Motor-driven chain saw braking/locking apparatus | Kazuyuki Takahashi, Etushi Yamamoto | 1989-03-14 |
| D288896 | Electric chainsaw | Etsushi Yamamoto, Kazuyuki Takahashi | 1987-03-24 |
| 4607184 | Brush holder with automatically released retainer | Kazuyuki Takahashi, Etushi Yamamoto | 1986-08-19 |