Inventor · disambiguated record
Genroku Sugiyama
Also filed as: SUGIYAMA GENROKU
94 granted patents·5 pending applications·2,257 citations·filing 1986–2021
99Inventor score
Top patents by PatentIndex Score
99 records- 0197US6810362B2Construction machine managing method and system, and arithmetic processing deviceHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Oct 26, 2004·90 cites·30 claims
- 0295US11718977B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Aug 8, 2023·4 cites·4 claims
- 0393US7272928B2Hydraulic circuit of construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2006·Granted Sep 25, 2007·24 cites·4 claims
- 0493US5177964AHydraulic drive traveling systemHITACHI CONSTRUCTION MACHINERY·Filed 1990·Granted Jan 12, 1993·64 cites·21 claims
- 0592US5758499AHydraulic control systemHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted Jun 2, 1998·51 cites·7 claims
- 0692US4875337AConstruction 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
- 0791US11739502B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2021·Granted Aug 29, 2023·2 cites·4 claims
- 0891US5083430AHydraulic driving apparatusHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Jan 28, 1992·43 cites·21 claims
- 0990US7222051B2Working 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
- 1090US5447027AHydraulic drive system for hydraulic working machinesHITACHI CONSTRUCTION MACHINERY·Filed 1994·Granted Sep 5, 1995·42 cites·12 claims
- 1190US5056312AHydraulic drive system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Oct 15, 1991·47 cites·15 claims
- 1290US4697418AControl system for hydraulically-operated construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 1986·Granted Oct 6, 1987·53 cites·13 claims
- 1389US7076947B2Hydraulic circuit of construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Jul 18, 2006·28 cites·6 claims
- 1489US6907384B2Method and system for managing construction machine, and arithmetic processing apparatusHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Jun 14, 2005·57 cites·19 claims
- 1589US5134853AHydraulic drive system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Aug 4, 1992·38 cites·10 claims
- 1688US5446979AHydraulic circuit system for civil engineering and construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1993·Granted Sep 5, 1995·39 cites·9 claims
- 1787US7643938B2Location confirmation method and location display system of construction machine and such construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Jan 5, 2010·45 cites·17 claims
- 1887US7079982B2Working machine, trouble diagnosis system of working machine, and maintenance system of working machineHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Jul 18, 2006·52 cites·12 claims
- 1986US6449884B1Method and system for managing construction machine, and arithmetic processing apparatusHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Sep 17, 2002·36 cites·17 claims
- 2086US5479778AHydraulic control system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1994·Granted Jan 2, 1996·33 cites·14 claims
- 2186US5442912AHydraulic recovery deviceHITACHI CONSTRUCTION MACHINERY·Filed 1993·Granted Aug 22, 1995·34 cites·17 claims
- 2284US5315826AHydraulic drive system and directional control valveHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted May 31, 1994·33 cites·12 claims
- 2384US5267440AHydraulic control system for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1991·Granted Dec 7, 1993·55 cites·14 claims
- 2483US7127887B2Oil pressure circuit for working machinesHITACHI CONSTRUCTION MACHINERY·Filed 2004·Granted Oct 31, 2006·31 cites·6 claims
- 2583US6728619B2Failure measure outputting method, output system, and output deviceHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Apr 27, 2004·74 cites·19 claims
- 2682US7493112B2Construction machine management apparatus and construction machines management systemHITACHI CONSTRUCTION MACHINERY·Filed 2007·Granted Feb 17, 2009·16 cites·4 claims
- 2781US6691510B2Pipe breakage control valve deviceHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Feb 17, 2004·23 cites·3 claims
- 2881US5161373AHydraulic control valve systemZEXEL CORP·Filed 1991·Granted Nov 10, 1992·32 cites·11 claims
- 2979US7171188B1Communication system for working machinesHITACHI CONSTRUCTION MACHINERY·Filed 2000·Granted Jan 30, 2007·27 cites·8 claims
- 3079US6832175B2Method for managing construction machine, and arithmetic processing apparatusHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted Dec 14, 2004·46 cites·8 claims
- 3178US5433076AHydraulic control valve apparatus and hydraulic drive systemHITACHI CONSTRUCTION MACHINERY·Filed 1993·Granted Jul 18, 1995·27 cites·39 claims
- 3277US7050893B2Method of detection of actual operating time of machinery deployed at construction sites, data collection and management system, and base stationHITACHI CONSTRUCTION MACHINERY·Filed 2001·Granted May 23, 2006·23 cites·26 claims
- 3377US5152143AHydraulic drive systemHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Oct 6, 1992·28 cites·18 claims
- 3477US4753158APilot hydraulic system for operating directional control valveHITACHI CONSTRUCTION MACHINERY·Filed 1986·Granted Jun 28, 1988·22 cites·9 claims
- 3576US7287188B2Work machine maintenance systemHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Oct 23, 2007·21 cites·2 claims
- 3674US7370475B2Traveling hydraulic working machineHITACHI CONSTRUCTION MACHINERY·Filed 2004·Granted May 13, 2008·13 cites·13 claims
- 3774US5186000AHydraulic drive system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1992·Granted Feb 16, 1993·38 cites·3 claims
- 3873US7512471B2Control device for working vehicleHITACHI CONSTRUCTION MACHINERY·Filed 2004·Granted Mar 31, 2009·13 cites·3 claims
- 3973US5911506AControl system for prime mover and hydraulic pump of hydraulic construction machineHITACHI CONSTRUCTION MACHINERY·Filed 1998·Granted Jun 15, 1999·37 cites·6 claims
- 4073US5848531AHydraulic drive system for construction machinesHITACHI CONSTRUCTION MACHINERY·Filed 1997·Granted Dec 15, 1998·36 cites·17 claims
- 4173US5829252AHydraulic system having tandem hydraulic functionHITACHI CONSTRUCTION MACHINERY·Filed 1996·Granted Nov 3, 1998·37 cites·23 claims
- 4272US7657841B2Monitor display for construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2005·Granted Feb 2, 2010·13 cites·9 claims
- 4372US7228125B2Construction machine management apparatus and construction machines management systemHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Jun 5, 2007·23 cites·5 claims
- 4472US5673558AHydraulic circuit system for hydraulic excavatorHITACHI CONSTRUCTION MACHINERY·Filed 1995·Granted Oct 7, 1997·38 cites·10 claims
- 4572US5005358AHydraulic drive system for crawler-mounted construction vehicleHITACHI CONSTRUCTION MACHINERY·Filed 1989·Granted Apr 9, 1991·20 cites·5 claims
- 4671US11454004B2Work machineHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Sep 27, 2022·2 cites·11 claims
- 4771US7002465B2Security system of construction machineHITACHI CONSTRUCTION MACHINERY·Filed 2002·Granted Feb 21, 2006·20 cites·32 claims
- 4871US5421155AHydraulic drive system for hydraulic working machinesHITACHI CONSTRUCTION MACHINERY·Filed 1993·Granted Jun 6, 1995·34 cites·15 claims
- 4970US11149410B2Work machine with automatic and manual operating controlHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Oct 19, 2021·2 cites·7 claims
- 5070US7162347B2System and method for managing construction machineryHITACHI CONSTRUCTION MACHINERY·Filed 2003·Granted Jan 9, 2007·18 cites·9 claims
Showing the top 50 of 99 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →