Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5927073 | Electric hydraulic hybrid motor | Naoki Ishizaki, Hiromasa Yamaguchi | 1999-07-27 |
| 5877577 | Electric hydraulic hybrid motor, control device and control method for the same motor | Naoki Ishizaki, Hiromasa Yamaguchi | 1999-03-02 |
| 5845678 | Pressurized fluid supply system | Kazuyoshi Ishihama, Kazunori Ikei | 1998-12-08 |
| 5784885 | Pressurized fluid supply system | Kazuyoshi Ishihama, Kazunori Ikei | 1998-07-28 |
| 5651390 | Pressurized fluid supply system | Kazuyoshi Ishihama, Kazunori Ikei | 1997-07-29 |
| 5255705 | Hydraulic pressure control system | Tadao Karakama, Sadao Nunotani, Naoki Ishizaki, Masayuki Tanaami | 1993-10-26 |
| 5253672 | Hydraulic pressure control system | Tadao Karakama, Sadao Nunotani, Naoki Ishizaki, Masayuki Tanaami | 1993-10-19 |
| 5188147 | Pressure compensating type hydraulic valve | Kiyoshi Shirai, Koichi Morita, Takahide Takiguchi, Naoki Ishizaki | 1993-02-23 |
| 4646622 | Hydraulic control apparatus | Naoki Ishizaki, Sadao Nunotani, Tatsumi Tada, Shuki Akushicki | 1987-03-03 |
| 4549466 | Split type oil hydraulic piston pump and pressurized oil feed circuit making use of the same pump | Kenzo Hoashi | 1985-10-29 |
| 4517800 | Hydraulic control system for off-highway self-propelled work machines | Tadao Karakama | 1985-05-21 |
| 4473090 | Hydraulic power system for implement actuators in an off-highway self-propelled work machine | Kiyoshi Shirai | 1984-09-25 |
| 4420937 | Hydraulic circuit for a variable displacement pump | Toshihiro Naruse, Hideaki Saito | 1983-12-20 |
| 4306488 | Pressure-compensated directional control valve | — | 1981-12-22 |
| 4248573 | Hydraulic control system for variable displacement pump | Hideaki Tohma, Yoshito Sato | 1981-02-03 |
| 4248574 | Hydraulic control system for variable displacement pumps | Hideaki Tohma, Yoshito Sato | 1981-02-03 |
| 4245962 | Displacement control system for variable displacement pump | Hideaki Toma, Yoshito Sato | 1981-01-20 |
| 4244678 | Displacement control system for variable displacement pump | Hideaki Toma, Yoshito Sato | 1981-01-13 |
| 4203712 | Single or plural variable displacement pump control with an improved flow metering valve | — | 1980-05-20 |