Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8025039 | Valve spring device and valve train of internal combustion engine using the same | Kazuo Iwata, Noritoshi Takamura, Norihiro Tajima, Takeshi Yabushita | 2011-09-27 |
| 7955122 | Conductive contact unit | Koji Ishikawa, Taiichi Rikimaru | 2011-06-07 |
| 7942677 | Conductive contact and conductive contact unit | Taiichi Rikimaru, Koji Ishikawa | 2011-05-17 |
| 7866986 | Conductive contact unit and conductive contact | Taiichi Rikimaru, Koji Ishikawa | 2011-01-11 |