Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5488787 | Hydraulic drive system for construction machine | Kazuhiko Otsubo, Gen Yasuda, Koji Fujita, Takayuki Yamakawa, Kazuyoshi Narita | 1996-02-06 |
| 5295795 | Hydraulic drive system for construction machine | Tomohiko Yasuda | 1994-03-22 |
| 5277027 | Hydraulic drive system with pressure compensting valve | Tomohiko Yasuda | 1994-01-11 |
| 5174114 | Hydraulic drive system for construction machine | — | 1992-12-29 |
| 5056312 | Hydraulic drive system for construction machines | Toichi Hirata, Genroku Sugiyama, Yusuke Kajita, Tomohiko Yasudi, Gen Yasuda +5 more | 1991-10-15 |
| 5048293 | Pump controlling apparatus for construction machine | — | 1991-09-17 |
| 4768339 | Hydraulic drive system | Shuichi Ichiyama, Keiichiro Uno, Tomohiko Yasuda | 1988-09-06 |
| 4627013 | Load weight indicating system for load moving machine | Shuichi Ichiyama, Tomohiko Yasuda | 1986-12-02 |
| 4606313 | Method of and system for controlling hydraulic power system | Eiki Izumi, Hiroshi Watanabe, Kazuo Honma, Kichio Nakajima | 1986-08-19 |
| 4587808 | Control system for hydraulic circuit means | Hiroshi Watanabe, Eiki Izumi, Kazuo Honma, Kichio Nakajima | 1986-05-13 |
| 4586330 | Control system for hydraulic circuit apparatus | Hiroshi Watanabe, Eiki Izumi, Kazuo Honma, Kichio Nakajima | 1986-05-06 |
| 4571941 | Hydraulic power system | Eiki Izumi, Sotaro Tanaka, Takeshi Yamaguchi | 1986-02-25 |
| 4561250 | Hydraulic drive system having a plurality of prime movers | Eiki Izumi, Takeshi Yamaguchi, Sotaro Tanaka | 1985-12-31 |
| 4561249 | Control system for hydraulic circuit apparatus | Hiroshi Watanabe, Eiki Izumi, Kazuo Honma, Kichio Nakajima | 1985-12-31 |
| 4531369 | Flushing valve system in closed circuit hydrostatic power transmission | Eiki Izumi, Hiroshi Watanabe, Kazuo Honma, Kichio Nakajima | 1985-07-30 |
| 4528813 | Control system for hydrostatic power transmission | Eiki Izumi, Hiroshi Watanabe, Kazuo Honma, Kichio Nakajima | 1985-07-16 |
| 4520626 | Hydraulic drive system for single rod cylinder | Kichio Nakajima, Eiki Izumi, Hiroshi Watanabe, Kazuo Honma | 1985-06-04 |
| 4510750 | Circuit pressure control system for hydrostatic power transmission | Eiki Izumi, Hiroshi Watanabe, Kazuo Honma, Kichio Nakajima | 1985-04-16 |
| 4464898 | Hydraulic power system | Shuichi Ichiyama, Yasuhiko Murata | 1984-08-14 |
| 4451893 | Control method and control system for hydrostatic drive system | Eiki Izumi, Hiroshi Watanabe, Kazuo Honma, Kichio Nakajima | 1984-05-29 |
| 4395199 | Control method of a system of internal combustion engine and hydraulic pump | Eiki Izumi, Hiroshi Watanabe, Kazuo Honma, Kichio Nakajima | 1983-07-26 |