Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8448814 | Fit structure of a housing | Ritsu Yamamoto, Masahiro Ito | 2013-05-28 |
| 8395463 | Contact device | Masahiro Ito, Ritsu Yamamoto, Tsukasa Nishimura | 2013-03-12 |
| 7876183 | Electromagnetic switching device | Katsuya Uruma, Masahiro Itou, Ritsu Yamamoto, Riichi Uotome | 2011-01-25 |
| 7859373 | Contact device | Ritsu Yamamoto, Riichi Uotome, Katsuya Uruma, Masahiro Ito | 2010-12-28 |