Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D521166 | Flash light | Yukihiro Yamamoto, Kenji Iwai | 2006-05-16 |
| D503640 | Battery checker | Yukihiro Yamamoto | 2005-04-05 |
| D500377 | Headlamp | Yukihiro Yamamoto | 2004-12-28 |
| D479014 | Flashlight | Yukihiro Yamamoto | 2003-08-26 |
| D467376 | Combined flashlight and fluorescent lamp | Yukihiro Yamamoto, Takeshi Sugisaki | 2002-12-17 |
| D465045 | Flashlight | Yukihiro Yamamoto, Takeshi Sugisaki | 2002-10-29 |
| D464753 | Portable light | Yukihiro Yamamoto, Takeshi Sugisaki | 2002-10-22 |
| D356170 | Flashlight | Shigenori Suzuki, Yukihiro Yamamoto | 1995-03-07 |