Assignee
HITACHI CONSTRUCTION MACHINERY
JP·552 granted patents·69 pending applications·13,521 citations·filing 1974–2015
Top patents by PatentIndex Score
621 records- 0198US4606313AMethod of and system for controlling hydraulic power systemHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted Aug 19, 1986·107 cites·31 claims
- 0297US6810362B2Construction machine managing method and system, and arithmetic processing deviceHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Oct 26, 2004·90 cites·30 claims
- 0397US4586330AControl system for hydraulic circuit apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted May 6, 1986·72 cites·6 claims
- 0496USD549722SGraphic user interface for display for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2006·Granted Aug 28, 2007·144 cites·1 claims
- 0596USD549721SGraphic user interface for display for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2006·Granted Aug 28, 2007·170 cites·1 claims
- 0696US6450284B1Cab for construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted Sep 17, 2002·91 cites·5 claims
- 0796US6020651AEngine control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1998·Granted Feb 1, 2000·107 cites·7 claims
- 0896US4967557AControl system for load-sensing hydraulic drive circuitHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Nov 6, 1990·90 cites·12 claims
- 0996US4510750ACircuit pressure control system for hydrostatic power transmissionHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted Apr 16, 1985·68 cites·5 claims
- 1096US4489551AFailure detection system for hydraulic pumpHITACHI CONSTRUCTION MACHINERY·Filed 1984·Granted Dec 25, 1984·86 cites·10 claims
- 1195USD684598SHydraulic excavatorHITACHI CONSTRUCTION MACHINERY·Filed 2012·Granted Jun 18, 2013·71 cites·1 claims
- 1295US5835874ARegion limiting excavation control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1995·Granted Nov 10, 1998·117 cites·34 claims
- 1395US5129230AControl system for load sensing hydraulic drive circuitHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Jul 14, 1992·62 cites·8 claims
- 1495US5048293APump controlling apparatus for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Sep 17, 1991·81 cites·17 claims
- 1595US4627013ALoad weight indicating system for load moving machineHITACHI CONSTRUCTION MACHINERY·Filed 1983·Granted Dec 2, 1986·80 cites·14 claims
- 1695US4369625ADrive system for construction machinery and method of controlling hydraulic circuit means thereofHITACHI CONSTRUCTION MACHINERY·Filed 1980·Granted Jan 25, 1983·167 cites·13 claims
- 1794US6922925B2Construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Aug 2, 2005·92 cites·17 claims
- 1894US5638677AControl device for hydraulically propelled work vehicleHITACHI CONSTRUCTION MACHINERY·Filed 1994·Granted Jun 17, 1997·75 cites·5 claims
- 1994US5155996AHydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Oct 20, 1992·61 cites·38 claims
- 2094US4448269ACutter head for pit-boring machineHITACHI CONSTRUCTION MACHINERY·Filed 1981·Granted May 15, 1984·167 cites·8 claims
- 2193US9340953B2Construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2013·Granted May 17, 2016·19 cites·9 claims
- 2293US7272928B2Hydraulic circuit of construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2006·Granted Sep 25, 2007·24 cites·4 claims
- 2393US6317669B1Automatically operated shovelHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted Nov 13, 2001·83 cites·24 claims
- 2493US5177964AHydraulic drive traveling systemHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Jan 12, 1993·64 cites·21 claims
- 2593US4768339AHydraulic drive systemHITACHI CONSTRUCTION MACHINERY·Filed 1987·Granted Sep 6, 1988·72 cites·18 claims
- 2693US4706932AFluid control valve apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1983·Granted Nov 17, 1987·79 cites·20 claims
- 2793US4561249AControl system for hydraulic circuit apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted Dec 31, 1985·52 cites·2 claims
- 2892US7979182B2Swing drive system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2006·Granted Jul 12, 2011·18 cites·5 claims
- 2992US6782644B2Remote control system and remote setting system for construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Aug 31, 2004·67 cites·20 claims
- 3092US6336067B1Electronic control system and control device for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted Jan 1, 2002·52 cites·17 claims
- 3192US5758499AHydraulic control systemHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted Jun 2, 1998·51 cites·7 claims
- 3292US4875337AConstruction machine dual-dump hydraulic circuit with piloted arm-boom cylinder supply priority switching valvesHITACHI CONSTRUCTION MACHINERY·Filed 1987·Granted Oct 24, 1989·46 cites·7 claims
- 3391US9052716B2System for indicating parking position and direction of dump truck and hauling systemHITACHI CONSTRUCTION MACHINERY·Filed 2012·Granted Jun 9, 2015·14 cites·16 claims
- 3491USD684599SHydraulic excavatorHITACHI CONSTRUCTION MACHINERY·Filed 2012·Granted Jun 18, 2013·48 cites·1 claims
- 3591US6532409B1Target excavation surface setting device for excavation machine, recording medium therefor and display unitHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted Mar 11, 2003·54 cites·11 claims
- 3691US6076029ASlope excavation controller of hydraulic shovel, target slope setting device and slope excavation forming methodHITACHI CONSTRUCTION MACHINERY·Filed 1998·Granted Jun 13, 2000·80 cites·13 claims
- 3791US6055851AApparatus for diagnosing failure of hydraulic pump for work machineHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted May 2, 2000·86 cites·10 claims
- 3891US5083430AHydraulic driving apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Jan 28, 1992·43 cites·21 claims
- 3991US4561250AHydraulic drive system having a plurality of prime moversHITACHI CONSTRUCTION MACHINERY·Filed 1982·Granted Dec 31, 1985·46 cites·10 claims
- 4090US8365855B2Construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2009·Granted Feb 5, 2013·25 cites·7 claims
- 4190US7222051B2Working machine, failure diagnosis system for work machine and maintenance system for work machinesHITACHI CONSTRUCTION MACHINERY·Filed 2005·Granted May 22, 2007·23 cites·2 claims
- 4290US6823672B2Control device for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Nov 30, 2004·33 cites·4 claims
- 4390US6339929B1Swivel control apparatusHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted Jan 22, 2002·46 cites·8 claims
- 4490USD437602SHydraulic excavatorHITACHI CONSTRUCTION MACHINERY·Filed 1999·Granted Feb 13, 2001·48 cites·1 claims
- 4590US5968104AFront control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Oct 19, 1999·76 cites·13 claims
- 4690US5632083ALead frame fabricating method and lead frame fabricating apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1994·Granted May 27, 1997·80 cites·31 claims
- 4790US5447027AHydraulic drive system for hydraulic working machinesHITACHI CONSTRUCTION MACHINERY·Filed 1994·Granted Sep 5, 1995·42 cites·12 claims
- 4890US5056312AHydraulic drive system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Oct 15, 1991·47 cites·15 claims
- 4990US5048294ASafety device for hydraulic closed circuitHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Sep 17, 1991·47 cites·8 claims
- 5090US4697418AControl system for hydraulically-operated construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 1986·Granted Oct 6, 1987·53 cites·13 claims
Showing the top 50 of 621 patent records by PatentIndex Score.
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