Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4970862 | Hydraulic continuously variable speed transmission | Kazuya Maki, Kouji Yamaguchi | 1990-11-20 |
| 4967555 | Hydraulic continuously variable speed transmission with relief valve to prevent engine stall | Kazuya Maki | 1990-11-06 |
| 4939981 | Hydraulic servo cylinder device for controlling continuously variable speed transmission | Kazuya Maki, Hideo Koyama | 1990-07-10 |
| 4911063 | Hydraulically operated swash-plate apparatus | Eiichiro Kawahara, Takashi Nakamura | 1990-03-27 |
| 4765295 | Throttle valve controller for internal combustion engine | Yoshikazu Ishikawa, Kouji Yamaguchi | 1988-08-23 |
| 4765296 | Throttle valve control for internal combustion engine | Yoshikazu Ishikawa, Kouji Yamaguchi | 1988-08-23 |