Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4751976 | Steering system for automotive vehicle or the like | Tokiyoshi Yanai, Masafumi Nakayama | 1988-06-21 |
| 4669360 | Power steering system | Tokiyoshi Yanai, Hirotsugu Yamaguchi, Masafumi Nakayama, Yutaka Aoyama, Moritsune Nakata | 1987-06-02 |
| 4634135 | Steering system controlling transverse displacement of a gear housing | Moritsune Nakata, Tokiyoshi Yanai, Hirotsugu Yamaguchi, Yutaka Aoyama, Yasuji Shibahata | 1987-01-06 |
| 4516422 | Method of manufacturing racks for variable ratio steering gears | Kunihiko Morikawa, Tokiyoshi Yanai | 1985-05-14 |
| 4475413 | Variable ratio rack and pinion steering gear | — | 1984-10-09 |
| 4347780 | Operating valve assembly for a power steering | Koichi Takahashi, Minoru Watanabe | 1982-09-07 |
| 4290452 | Rotary-motion valve and power-assisted steering system incorporating the valve | Koichi Takahashi | 1981-09-22 |