Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9347534 | Ball screw device and electric power steering system including the same | Masashi Yamaguchi | 2016-05-24 |
| 9010482 | Transmission ratio variable device | — | 2015-04-21 |
| 8925673 | Transmission ratio variable device | — | 2015-01-06 |
| 8784253 | Transmission ratio variable device | Hitoshi Sasaki, Tomonari Yamakawa, Masanori Natsume | 2014-07-22 |
| 8662242 | Vehicle steering system | Tomonari Yamakawa | 2014-03-04 |
| 8216104 | Gear set and nutation gear set | Yoshikazu Kuroumaru, Masahide Nitano, Makoto Yamasawa | 2012-07-10 |