Inventor · disambiguated record
Naoki Ishizaki
Also filed as: ISHIZAKI NAOKI
50 granted patents·3 pending applications·952 citations·filing 1985–2023
99Inventor score
Top patents by PatentIndex Score
53 records- 0195US7448976B2Speed-changing deviceKOMATSU MFG CO LTD·Filed 2007·Granted Nov 11, 2008·30 cites·2 claims
- 0295US6209322B1Pressurized fluid supply systemKOMATSU MFG CO LTD·Filed 1997·Granted Apr 3, 2001·68 cites·2 claims
- 0393US5209063AHydraulic circuit utilizing a compensator pressure selecting valueKOMATSU MFG CO LTD·Filed 1990·Granted May 11, 1993·55 cites·7 claims
- 0492US6170261B1Hydraulic fluid supply systemKOMATSU MFG CO LTD·Filed 1998·Granted Jan 9, 2001·67 cites·4 claims
- 0592US5481872AHydraulic circuit for operating plural actuators and its pressure compensating valve and maximum load pressure detectorKOMATSU MFG CO LTD·Filed 1992·Granted Jan 9, 1996·50 cites·23 claims
- 0691US6911743B2Aerogenerator having a fluid transmission and a gear transmissionKOMATSU MFG CO LTD·Filed 2002·Granted Jun 28, 2005·37 cites·1 claims
- 0790US7070531B2Hydromechanical transmissionKOMATSU MFG CO LTD·Filed 2004·Granted Jul 4, 2006·33 cites·2 claims
- 0885US5857330ATravelling control circuit for a hydraulically driven type of travelling apparatusKOMATSU MFG CO LTD·Filed 1995·Granted Jan 12, 1999·39 cites·9 claims
- 0982US6435289B1Apparatus for altering operation apparatus and actuator combinations, and operation lever apparatusKOMATSU MFG CO LTD·Filed 2000·Granted Aug 20, 2002·32 cites·9 claims
- 1081US5271227AHydraulic apparatus with pressure compensating valvesKOMATSU MFG CO LTD·Filed 1991·Granted Dec 21, 1993·31 cites·3 claims
- 1179US6328127B1Operating lever deviceKOMATSU MFG CO LTD·Filed 2000·Granted Dec 11, 2001·28 cites·9 claims
- 1277US5218897AHydraulic circuit apparatus for operating work-implement actuating cylindersKOMATSU MFG CO LTD·Filed 1990·Granted Jun 15, 1993·28 cites·6 claims
- 1375US6561751B1Actuator control device and bucket posture control device for hydraulic drive machineKOMATSU MFG CO LTD·Filed 2000·Granted May 13, 2003·16 cites·5 claims
- 1474US6655229B2Operation lever deviceKOMATSU MFG CO LTD·Filed 2001·Granted Dec 2, 2003·15 cites·8 claims
- 1573US5832808ADirectional control valve unitKOMATSU MFG CO LTD·Filed 1995·Granted Nov 10, 1998·23 cites·6 claims
- 1673US5572919AApparatus for controlling pressure in a cylinder chamber of a hydraulic pump-motorKOMATSU MFG CO LTD·Filed 1993·Granted Nov 12, 1996·31 cites·4 claims
- 1771US7416503B2Speed-changing deviceKOMATSU MFG CO LTD·Filed 2004·Granted Aug 26, 2008·11 cites·8 claims
- 1871US5279122AHydraulic circuit apparatus for supplying fluid under pressure into hydraulic cylinders for work implementKOMATSU MFG CO LTD·Filed 1993·Granted Jan 18, 1994·21 cites·8 claims
- 1970US5884713AVibration generating apparatusKOMATSU MFG CO LTD·Filed 1996·Granted Mar 23, 1999·31 cites·10 claims
- 2069USD1053117STread portion of an automobile tireBRIDGESTONE CORP·Filed 2023·Granted Dec 3, 2024·3 cites·1 claims
- 2168US4599050ADevice for controlling displacement of variable displacement hydraulic pumpKOMATSU MFG CO LTD·Filed 1985·Granted Jul 8, 1986·23 cites·1 claims
- 2267US5927073AElectric hydraulic hybrid motorKOMATSU MFG CO LTD·Filed 1996·Granted Jul 27, 1999·25 cites·23 claims
- 2367US5398507AHydraulic circuit systemKOMATSU MFG CO LTD·Filed 1991·Granted Mar 21, 1995·20 cites·4 claims
- 2465US5273069AOperation valve with pressure compensation valveKOMATSU MFG CO LTD·Filed 1991·Granted Dec 28, 1993·30 cites·2 claims
- 2564US5372060AHydraulic valve assemblyKOMATSU MFG CO LTD·Filed 1993·Granted Dec 13, 1994·23 cites·1 claims
- 2661US7971434B2Device and method for continuously variable transmission of traveling vehicleKOMATSU MFG CO LTD·Filed 2006·Granted Jul 5, 2011·4 cites·18 claims
- 2759US5613519AOperating valve assembly with pressure compensation valveKOMATSU MFG CO LTD·Filed 1993·Granted Mar 25, 1997·18 cites·3 claims
- 2858US5253672AHydraulic pressure control systemKOMATSU MFG CO LTD·Filed 1989·Granted Oct 19, 1993·13 cites·7 claims
- 2956US5163477AElectrohydraulic proportional control valveKOMATSU MFG CO LTD·Filed 1989·Granted Nov 17, 1992·17 cites·3 claims
- 3053US5136930AApparatus for supplying pressure oil to hydraulic cylinders employed in working machinesKOMATSU MFG CO LTD·Filed 1989·Granted Aug 11, 1992·11 cites·1 claims
- 3152US2009290996A1Bent Axis Type Variable Displacement Pump/MotorKOMATSU MFG CO LTD·Filed 2006·Application pending·0 cites
- 3249US5877577AElectric hydraulic hybrid motor, control device and control method for the same motorKOMATSU MFG CO LTD·Filed 1996·Granted Mar 2, 1999·15 cites·21 claims
- 3348US6907902B2Hydraulic signal output deviceKOMATSU MFG CO LTD·Filed 2002·Granted Jun 21, 2005·4 cites·12 claims
- 3448US5212950AHydraulic circuit with pilot pressure controlled bypassKOMATSU MFG CO LTD·Filed 1992·Granted May 25, 1993·10 cites·4 claims
- 3547US5188147APressure compensating type hydraulic valveKOMATSU MFG CO LTD·Filed 1990·Granted Feb 23, 1993·12 cites·2 claims
- 3643US4646622AHydraulic control apparatusKOMATSU MFG CO LTD·Filed 1985·Granted Mar 3, 1987·11 cites·3 claims
- 3742US2004101417A1Volume control apparatus of radial piston pump or motor and positioning apparatusKOMATSU MFG CO LTD·Filed 2003·Application pending·0 cites
- 3841US5839885ACapacity control apparatus for a variable capacity hydraulic pumpKOMATSU MFG CO LTD·Filed 1995·Granted Nov 24, 1998·11 cites·13 claims
- 3939US7124577B2Vehicular steering control deviceKOMATSU MFG CO LTD·Filed 2004·Granted Oct 24, 2006·0 cites·2 claims
- 4039US5046400AControl valve systemKOMATSU MFG CO LTD·Filed 1989·Granted Sep 10, 1991·6 cites·2 claims
- 4138US5778929ADirectional control valve assembly having a pressure compensation valveKOMATSU MFG CO LTD·Filed 1995·Granted Jul 14, 1998·6 cites·8 claims
- 4237US5477678AHydraulic circuit systemKOMATSU MFG CO LTD·Filed 1992·Granted Dec 26, 1995·6 cites·4 claims
- 4337US5040565APilot operated control valve systemKOMATSU MFG CO LTD·Filed 1989·Granted Aug 20, 1991·5 cites·4 claims
- 4436US2010303643A1Fan Drive SystemKATAOKA TOYOMI·Filed 2007·Application pending·0 cites
- 4535US5738134APressure compensation valveKOMATSU MFG CO LTD·Filed 1995·Granted Apr 14, 1998·5 cites·3 claims
- 4635US5255705AHydraulic pressure control systemKOMATSU MFG CO LTD·Filed 1988·Granted Oct 26, 1993·4 cites·6 claims
- 4735US5234028AVariable pressure control valveKABUSHIKI KAISHO KOMATSU SEISA·Filed 1990·Granted Aug 10, 1993·9 cites·3 claims
- 4835US5076144APoppet valve deviceKOMATSU MFG CO LTD·Filed 1989·Granted Dec 31, 1991·4 cites·10 claims
- 4934US5730182APressure compensation valveKOMATSU MFG CO LTD·Filed 1995·Granted Mar 24, 1998·4 cites·3 claims
- 5032US4984603AFlow control valve assemblyKOMATSU MFG CO LTD·Filed 1989·Granted Jan 15, 1991·3 cites·4 claims
Showing the top 50 of 53 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →