Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4627637 | Damping force-variable damper device for vehicles provided with power steering device | Toshihiko Aoyama, Takashi Ishida | 1986-12-09 |
| 4618018 | Power steering device for vehicles | Tokuro Takaoka, Toshitake Kawai, Takashi Ishida | 1986-10-21 |
| 4401180 | Power steering device for vehicles | Masao Nishikawa, Toshihiko Aoyama, Tokuro Takaoka, Takashi Aoki, Yoichi Sato | 1983-08-30 |
| 4391342 | Steering mechanism for vehicles equipped with power steering system | Masao Nishikawa, Toshihiko Aoyama, Tokuro Takaoka, Takashi Aoki, Yoichi Sato | 1983-07-05 |
| 4369852 | Power steering apparatus for vehicles | Masao Nishikawa, Akira Iwasaki, Katsuhiko Fujimoto | 1983-01-25 |
| 4369695 | Power steering apparatus for vehicle | Masao Nishikawa, Takashi Aoki | 1983-01-25 |
| 4299302 | Power steering device for vehicles | Masao Nishikawa, Toshihiko Aoyama, Tokuro Takaoka, Takashi Aoki, Yoichi Sato | 1981-11-10 |
| 4240331 | Power steering apparatus for vehicle | Masao Nishikawa, Takashi Aoki | 1980-12-23 |