Issued Patents 1989
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884648 | Variable assist power steering system with varying power assist characteristic | Koh Uchida, Makoto Miyoshi | 1989-12-05 |
| 4875542 | Hydraulic system for variable assist power steering system | Koh Uchida, Makoto Miyoshi | 1989-10-24 |
| 4862985 | Variable assist power steering system with varying power assist with vehicle speed | Koh Uchida, Makoto Miyoshi, Hirohide Kai | 1989-09-05 |
| 4860635 | Steering control valve for variable power assist steering system | Koh Uchida | 1989-08-29 |
| 4860846 | Vehicle speed responsive variable assist power steering system | Koh Uchida, Makoto Miyoshi | 1989-08-29 |
| 4852462 | Operating noise-free fluid flow distributor circuit for variable assist power steering system | Koh Uchida, Makoto Miyoshi | 1989-08-01 |
| 4846296 | Hydraulic fluid pressure control system for use with power assist steering | Koh Uchida, Makoto Miyoshi | 1989-07-11 |
| 4844126 | Rotary control valve for power assist steering system | Koh Uchida, Makato Miyoshi | 1989-07-04 |
| 4830131 | Variable assist power steering system | Makato Miyoshi, Koh Uchida | 1989-05-16 |