Inventor · disambiguated record
Masakazu Haga
Also filed as: HAGA MASAKAZU
23 granted patents·1,023 citations·filing 1986–2000
97Inventor score
Files withHITACHI CONSTRUCTION MACHINERY23
Top patents by PatentIndex Score
23 records- 0195US5835874ARegion limiting excavation control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1995·Granted Nov 10, 1998·117 cites·34 claims
- 0294US5155996AHydraulic drive system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Oct 20, 1992·61 cites·38 claims
- 0391US6076029ASlope 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
- 0490US5968104AFront control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Oct 19, 1999·76 cites·13 claims
- 0590US4697418AControl system for hydraulically-operated construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 1986·Granted Oct 6, 1987·53 cites·13 claims
- 0689US5701691ARegion limiting excavation control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1995·Granted Dec 30, 1997·74 cites·21 claims
- 0788US6169948B1Front control system, area setting method and control panel for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Jan 2, 2001·63 cites·24 claims
- 0885US6275757B1Device for controlling limited-area excavation with construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1998·Granted Aug 14, 2001·57 cites·8 claims
- 0984US5735065AArea limiting excavation control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted Apr 7, 1998·55 cites·24 claims
- 1084US5267440AHydraulic control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Dec 7, 1993·55 cites·14 claims
- 1183US5957989AInterference preventing system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted Sep 28, 1999·53 cites·31 claims
- 1280US5752333AArea limiting excavation control system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted May 19, 1998·48 cites·10 claims
- 1377US5960378AExcavation area setting system for area limiting excavation control in construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Sep 28, 1999·44 cites·6 claims
- 1473US5822891AWork area limitation control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted Oct 20, 1998·38 cites·12 claims
- 1570US5918527ALocus control system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Jul 6, 1999·34 cites·19 claims
- 1666US5887365AFront control system for construction machine and oil temperature indicatorHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Mar 30, 1999·30 cites·10 claims
- 1762US5062350AHydraulic drive system for civil engineering and construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Nov 5, 1991·25 cites·9 claims
- 1857US4881450ADrive control system for hydraulic machineHITACHI CONSTRUCTION MACHINERY·Filed 1988·Granted Nov 21, 1989·18 cites·23 claims
- 1956US6564480B1Working apparatus for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted May 20, 2003·9 cites·12 claims
- 2054US6430490B1Hydraulic circuit control device of construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted Aug 6, 2002·9 cites·6 claims
- 2151US5074194AHydraulic driving method of and hydraulic driving apparatus for hydraulic machineHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Dec 24, 1991·13 cites·9 claims
- 2238US5265569APrime mover rotational speed control systemHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Nov 30, 1993·8 cites·2 claims
- 2332US5036817AEngine remote control systemHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Aug 6, 1991·3 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →