Inventor · disambiguated record
Masatsugu Arai
Also filed as: ARAI MASATSUGU
34 granted patents·21 pending applications·517 citations·filing 1992–2023
97Inventor score
Files withHITACHI LTD17HITACHI CONSTRUCTION MACH CO12FURUSE MUNEO2HITACHI VEHICLE ENERGY LTD2KANNO SEIICHIRO2
Top patents by PatentIndex Score
55 records- 0197US6388382B1Plasma processing apparatus and methodHITACHI LTD·Filed 2000·Granted May 14, 2002·78 cites·40 claims
- 0294US6833051B2Plasma processing apparatus and methodHITACHI LTD·Filed 2002·Granted Dec 21, 2004·33 cites·13 claims
- 0393US9586563B2Autonomous moving apparatus and autonomous movement systemHITACHI LTD·Filed 2012·Granted Mar 7, 2017·12 cites·14 claims
- 0492US6756737B2Plasma processing apparatus and methodHITACHI LTD·Filed 2002·Granted Jun 29, 2004·37 cites·4 claims
- 0592US6180019B1Plasma processing apparatus and methodHITACHI LTD·Filed 1997·Granted Jan 30, 2001·51 cites·2 claims
- 0691US6664738B2Plasma processing apparatusHITACHI LTD·Filed 2002·Granted Dec 16, 2003·52 cites·16 claims
- 0791US6499424B2Plasma processing apparatus and methodHITACHI LTD·Filed 2001·Granted Dec 31, 2002·23 cites·12 claims
- 0890US8839894B2Electric drive system for vehicleYOKOYAMA ATSUSHI·Filed 2010·Granted Sep 23, 2014·10 cites·12 claims
- 0989US8708071B2Cooling system for electric vehicleYOKOYAMA ATSUSHI·Filed 2010·Granted Apr 29, 2014·17 cites·6 claims
- 1089US8568916B2Lithium ion secondary batteryNAKAI KENJI·Filed 2008·Granted Oct 29, 2013·13 cites·7 claims
- 1188US7867644B2Secondary battery and secondary battery manufacturing methodHITACHI VEHICLE ENERGY LTD·Filed 2008·Granted Jan 11, 2011·8 cites·8 claims
- 1283US11396839B2Hydraulic drive fan control deviceHITACHI CONSTRUCTION MACH CO·Filed 2018·Granted Jul 26, 2022·3 cites·5 claims
- 1383US10583743B2Regenerative braking device and dump truckHITACHI CONSTRUCTION MACH CO·Filed 2016·Granted Mar 10, 2020·5 cites·4 claims
- 1483US9804606B2Management control deviceHITACHI CONSTRUCTION MACH CO·Filed 2015·Granted Oct 31, 2017·6 cites·6 claims
- 1582US6846363B2Plasma processing apparatus and methodHITACHI LTD·Filed 2002·Granted Jan 25, 2005·11 cites·6 claims
- 1682US5358032ALSI package cooling heat sink, method of manufacturing the same and LSI package to which the heat sink is mountedHITACHI LTD·Filed 1993·Granted Oct 25, 1994·73 cites·10 claims
- 1781US8346436B2Driving support systemHITACHI LTD·Filed 2011·Granted Jan 1, 2013·9 cites·2 claims
- 1881US6481370B2Plasma processsing apparatusHITACHI LTD·Filed 2000·Granted Nov 19, 2002·10 cites·9 claims
- 1977US9309982B2Vehicle device temperature adjustment systemAKIYAMA YUKI·Filed 2011·Granted Apr 12, 2016·9 cites·3 claims
- 2074US8538653B2Brake control apparatusMIYAJIMA AYUMU·Filed 2009·Granted Sep 17, 2013·7 cites·8 claims
- 2169US6838833B2Plasma processing apparatusHITACHI LTD·Filed 2003·Granted Jan 4, 2005·10 cites·6 claims
- 2266US7989107B2Lithium-ion secondary batteryHITACHI VEHICLE ENERGY LTD·Filed 2008·Granted Aug 2, 2011·1 cites·12 claims
- 2360US5307687AElectromagnetic flowmeterHITACHI LTD·Filed 1992·Granted May 3, 1994·20 cites·12 claims
- 2458US5400659AElectromagnetic flowmeter and manufacture method of sameHITACHI LTD·Filed 1993·Granted Mar 28, 1995·14 cites·8 claims
- 2555US2009181545A1Dry-etching method and apparatusNEGISHI NOBUYUKI·Filed 2009·Application pending·0 cites
- 2653US2008053958A1Plasma processing apparatusKADOTANI MASANORI·Filed 2007·Application pending·0 cites
- 2752US12221774B2Operation record analysis system for construction machineHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Feb 11, 2025·0 cites·7 claims
- 2852US12187130B2Electric vehicleHITACHI CONSTRUCTION MACH CO·Filed 2020·Granted Jan 7, 2025·0 cites·5 claims
- 2952US6897403B2Plasma processing method and plasma processing apparatusHITACHI HIGH TECH CORP·Filed 2003·Granted May 24, 2005·3 cites·3 claims
- 3052US2008314321A1Plasma processing apparatusFURUSE MUNEO·Filed 2008·Application pending·0 cites
- 3151US2011076535A1Secondary battery and secondary battery manufacturing methodAOTA KINYA·Filed 2010·Application pending·0 cites
- 3251US2008017107A1Plasma processing apparatusARAI MASATSUGU·Filed 2007·Application pending·0 cites
- 3350US2009088966A1Driving support systemHITACHI LTD·Filed 2008·Application pending·0 cites
- 3449US2025119636A1Video recording deviceHITACHI CONSTRUCTION MACH CO·Filed 2023·Application pending·0 cites
- 3548US2007240825A1Wafer processing apparatus capable of controlling wafer temperatureKANNO SEIICHIRO·Filed 2007·Application pending·0 cites
- 3647US2005284571A1Dry-etching method and apparatusNEGISHI NOBUYUKI·Filed 2005·Application pending·0 cites
- 3747US2006121195A1Plasma processing apparatus and method for manufacturing electrostatic chuckUDO RYUJIRO·Filed 2006·Application pending·0 cites
- 3846US11834033B2Regenerative braking system and electrically-driven work vehicle using regenerative braking systemHITACHI CONSTRUCTION MACH CO·Filed 2019·Granted Dec 5, 2023·0 cites·11 claims
- 3946US11124075B2Electrically driven work vehicle, and wheel electric driving unitHITACHI CONSTRUCTION MACH CO·Filed 2018·Granted Sep 21, 2021·0 cites·4 claims
- 4045US2002084035A1Plasma processing apparatus and methodFiled 2002·Application pending·0 cites
- 4144US6812725B2Semiconductor processing apparatus and wafer sensor moduleHITACHI LTD·Filed 2002·Granted Nov 2, 2004·2 cites·18 claims
- 4244US2007215278A1Plasma etching apparatus and method for forming inner wall of plasma processing chamberFURUSE MUNEO·Filed 2006·Application pending·0 cites
- 4344US2011072841A1Thermodynamic cycle system for moving vehicleHITACHI LTD·Filed 2010·Application pending·0 cites
- 4444US2005199183A1Plasma processing apparatusFiled 2004·Application pending·0 cites
- 4543US10107341B2Clutch control device for work machineHITACHI CONSTRUCTION MACH CO·Filed 2017·Granted Oct 23, 2018·0 cites·5 claims
- 4642US2004178177A1Plasma processing apparatusFiled 2004·Application pending·0 cites
- 4742US2005045104A1Plasma processing apparatusFiled 2004·Application pending·0 cites
- 4841US2004163601A1Plasma processing apparatusFiled 2003·Application pending·0 cites
- 4940US2005193951A1Plasma processing apparatusFiled 2004·Application pending·0 cites
- 5040US2004173469A1Plasma processing apparatus and method for manufacturing electrostatic chuckFiled 2003·Application pending·0 cites
Showing the top 50 of 55 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →