Inventor · disambiguated record
Eiki Izumi
Also filed as: IZUMI EIKI
28 granted patents·1,270 citations·filing 1980–2011
98Inventor score
Top patents by PatentIndex Score
28 records- 0198US4606313AMethod of and system for controlling hydraulic power systemHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted Aug 19, 1986·107 cites·31 claims
- 0297US4586330AControl system for hydraulic circuit apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted May 6, 1986·72 cites·6 claims
- 0396US4967557AControl system for load-sensing hydraulic drive circuitHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Nov 6, 1990·90 cites·12 claims
- 0496US4510750ACircuit pressure control system for hydrostatic power transmissionHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted Apr 16, 1985·68 cites·5 claims
- 0596US4489551AFailure detection system for hydraulic pumpHITACHI CONSTRUCTION MACHINERY·Filed 1984·Granted Dec 25, 1984·86 cites·10 claims
- 0695US5129230AControl system for load sensing hydraulic drive circuitHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Jul 14, 1992·62 cites·8 claims
- 0795US4369625ADrive system for construction machinery and method of controlling hydraulic circuit means thereofHITACHI CONSTRUCTION MACHINERY·Filed 1980·Granted Jan 25, 1983·167 cites·13 claims
- 0894US5155996AHydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Oct 20, 1992·61 cites·38 claims
- 0993US5177964AHydraulic drive traveling systemHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Jan 12, 1993·64 cites·21 claims
- 1093US4561249AControl system for hydraulic circuit apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted Dec 31, 1985·52 cites·2 claims
- 1191US4561250AHydraulic drive system having a plurality of prime moversHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted Dec 31, 1985·46 cites·10 claims
- 1290US5056312AHydraulic drive system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Oct 15, 1991·47 cites·15 claims
- 1389US4395199AControl method of a system of internal combustion engine and hydraulic pumpHITACHI CONSTRUCTION MACHINERY·Filed 1980·Granted Jul 26, 1983·51 cites·12 claims
- 1482US4809504AControl system for controlling input power to variable displacement hydraulic pumps of a hydraulic systemHITACHI CONSTRUCTION MACHINERY·Filed 1987·Granted Mar 7, 1989·41 cites·20 claims
- 1580US4531369AFlushing valve system in closed circuit hydrostatic power transmissionHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted Jul 30, 1985·30 cites·6 claims
- 1678US4571941AHydraulic power systemHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted Feb 25, 1986·29 cites·18 claims
- 1778US4528813AControl system for hydrostatic power transmissionHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted Jul 16, 1985·29 cites·9 claims
- 1875US5285642ALoad sensing control system for hydraulic machineHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Feb 15, 1994·35 cites·11 claims
- 1970US4587808AControl system for hydraulic circuit meansHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted May 13, 1986·25 cites·9 claims
- 2068US5170625AControl system for hydraulic pumpHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Dec 15, 1992·20 cites·43 claims
- 2167US4558593AFailure detection system for hydraulic pumpsHITACHI CONSTRUCTION MACHINERY·Filed 1984·Granted Dec 17, 1985·17 cites·7 claims
- 2264US4945723AFlow control valves for hydraulic motor systemHITACHI CONSTRUCTION MACHINERY·Filed 1988·Granted Aug 7, 1990·23 cites·19 claims
- 2356US4520626AHydraulic drive system for single rod cylinderHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted Jun 4, 1985·18 cites·3 claims
- 2456US4489552AAutomatic neutral point detecting system for hydraulic pumpHITACHI CONSTRUCTION MACHINERY·Filed 1983·Granted Dec 25, 1984·13 cites·10 claims
- 2544US4451893AControl method and control system for hydrostatic drive systemHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted May 29, 1984·8 cites·10 claims
- 2643US4565221AControl valve assemblyHITACHI CONSTRUCTION MACHINERY·Filed 1983·Granted Jan 21, 1986·7 cites·9 claims
- 2737US9410884B2Component measurement deviceMORITA TAKASHI·Filed 2011·Granted Aug 9, 2016·0 cites·16 claims
- 2830US5085128AVariable displacement bent axis type hydraulic machineHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Feb 4, 1992·2 cites·3 claims
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