Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4716982 | Four wheel steer control system connected with limited slip differential | Katsumi Ishii, Yoshio Matsuoka, Kotei Takahashi | 1988-01-05 |
| 4715466 | Four wheel steer control system for four wheel drive vehicle, responsive to driving torque distribution | Katsumi Ishii, Yoshio Matsuoka, Kotei Takahashi | 1987-12-29 |