Inventor · disambiguated record
Masatoshi Kumagai
Also filed as: KUMAGAI MASATOSHI
52 granted patents·14 pending applications·525 citations·filing 1994–2020
98Inventor score
Top patents by PatentIndex Score
66 records- 0194US8042973B2Lighting apparatusTOSHIBA LIGHTING & TECHNOLOGY·Filed 2010·Granted Oct 25, 2011·14 cites·3 claims
- 0291US7355528B2Traffic information providing system and car navigation systemHITACHI LTD·Filed 2004·Granted Apr 8, 2008·98 cites·8 claims
- 0390US8751077B2Route planning device and route planning systemHIRUTA TOMOAKI·Filed 2011·Granted Jun 10, 2014·15 cites·16 claims
- 0489US7894981B2Traffic information providing system and car navigation systemHITACHI LTD·Filed 2008·Granted Feb 22, 2011·26 cites·2 claims
- 0584US7536254B2Traffic information estimating systemHITACHI LTD·Filed 2006·Granted May 19, 2009·23 cites·6 claims
- 0683US8255162B2Method and system for route searching, and navigation apparatus using the sameOKUDE MARIKO·Filed 2008·Granted Aug 28, 2012·16 cites·10 claims
- 0783US7636630B2Traffic information prediction device with day-factors and day factor classificationsHITACHI LTD·Filed 2005·Granted Dec 22, 2009·24 cites·7 claims
- 0883US5525675AThermoplastic elastomer, composition therefor and production process thereof, as well as molded or otherwise formed product obtained from the thermoplastic elastomerMITSUI TOATSU CHEMICALS·Filed 1994·Granted Jun 11, 1996·36 cites·9 claims
- 0982US7722213B2Lighting apparatusTOSHIBA LIGHTING & TECHNOLOGY·Filed 2008·Granted May 25, 2010·12 cites·3 claims
- 1081US8952627B2Illuminating device and illuminating methodTOMIYAMA SAYAKA·Filed 2011·Granted Feb 10, 2015·11 cites·23 claims
- 1181US8275505B2Method and control system for controlling an auxiliary device of a vehicleKUMAGAI MASATOSHI·Filed 2010·Granted Sep 25, 2012·6 cites·17 claims
- 1280US8079736B2Lighting apparatusINOUE MASARU·Filed 2010·Granted Dec 20, 2011·5 cites·4 claims
- 1379US7899612B2Traffic information estimating systemHITACHI LTD·Filed 2009·Granted Mar 1, 2011·14 cites·2 claims
- 1478US9239242B2Route calculation system, navigation device, and route calculation methodCLARION CO LTD·Filed 2013·Granted Jan 19, 2016·6 cites·9 claims
- 1576US8068973B2Traffic information providing system and car navigation systemYAMANE KENICHIRO·Filed 2011·Granted Nov 29, 2011·6 cites·4 claims
- 1676US7555381B2Traffic information providing device, traffic information providing system, traffic information transmission method, and traffic information request methodZANAVY INFORMATICS KK·Filed 2007·Granted Jun 30, 2009·10 cites·6 claims
- 1775US7783415B2Traffic information processing apparatusZANAVY INFORMATICS KK·Filed 2007·Granted Aug 24, 2010·9 cites·6 claims
- 1875US7542844B2Dynamic prediction of traffic congestion by tracing feature-space trajectory of sparse floating-car dataHITACHI LTD·Filed 2008·Granted Jun 2, 2009·12 cites·6 claims
- 1975US6159827APreparation process of semiconductor waferMITSUI CHEMICALS INC·Filed 1999·Granted Dec 12, 2000·47 cites·21 claims
- 2074US8593067B2Led lighting device and illumination apparatusIWAI NAOKO·Filed 2011·Granted Nov 26, 2013·4 cites·5 claims
- 2172US7580788B2Traffic information interpolation systemHITACHI LTD·Filed 2007·Granted Aug 25, 2009·10 cites·4 claims
- 2271US9780563B2Power system control system and distributed controller used in sameHITACHI LTD·Filed 2013·Granted Oct 3, 2017·4 cites·10 claims
- 2371US8970127B2Lighting circuit and illumination deviceTOSHIBA LIGHTING & TECHNOLOGY·Filed 2013·Granted Mar 3, 2015·2 cites·15 claims
- 2470US8047687B2Lighting apparatusTOSHIBA LIGHTING & TECHNOLOGY·Filed 2010·Granted Nov 1, 2011·2 cites·4 claims
- 2567US7577513B2Traffic information prediction systemHITACHI LTD·Filed 2005·Granted Aug 18, 2009·8 cites·10 claims
- 2666US11456619B2Energy operation support system and method thereofHITACHI LTD·Filed 2019·Granted Sep 27, 2022·1 cites·9 claims
- 2765US8700293B2Traffic information distribution method, traffic information distribution apparatus and in-vehicle terminalOKUDE MARIKO·Filed 2008·Granted Apr 15, 2014·6 cites·8 claims
- 2864US10211777B2Photovoltaic power generator output estimation method and device, and power system monitoring device using sameHITACHI LTD·Filed 2015·Granted Feb 19, 2019·1 cites·7 claims
- 2963US8872198B2Luminaire and light-emitting apparatus with light-emitting deviceSHIBUSAWA SOICHI·Filed 2011·Granted Oct 28, 2014·2 cites·4 claims
- 3062US11088569B2Power flow monitoring device for power system, power system stabilization device, and power flow monitoring method for power systemHITACHI LTD·Filed 2017·Granted Aug 10, 2021·1 cites·10 claims
- 3162US9167653B2Power supply device and luminaireTOSHIBA LIGHTING & TECHNOLOGY·Filed 2013·Granted Oct 20, 2015·1 cites·18 claims
- 3261US8823278B2DC power source unit and LED lamp systemIWAI NAOKO·Filed 2011·Granted Sep 2, 2014·1 cites·10 claims
- 3361US7545743B2P2P traffic supporting router and P2P traffic information sharing system using the routerFUJITSU LTD·Filed 2004·Granted Jun 9, 2009·6 cites·8 claims
- 3460US8121776B2Incident resolution judgment systemHIRUTA TOMOAKI·Filed 2007·Granted Feb 21, 2012·4 cites·7 claims
- 3559US9774216B2System and method for controlling power systemYAMANE KENICHIRO·Filed 2012·Granted Sep 26, 2017·2 cites·8 claims
- 3659US8392100B2Method and apparatus for determining traffic dataYAMANE KENICHIRO·Filed 2009·Granted Mar 5, 2013·3 cites·8 claims
- 3757US8682583B2Route search systemOKUDE MARIKO·Filed 2012·Granted Mar 25, 2014·1 cites·11 claims
- 3854US8244451B2Traffic information providing system, apparatus, method, and in-vehicle information apparatusOKUDE MARIKO·Filed 2008·Granted Aug 14, 2012·1 cites·16 claims
- 3952US9006974B2Switching power supply apparatus and luminaireKITAMURA NORIYUKI·Filed 2012·Granted Apr 14, 2015·0 cites·20 claims
- 4049US12132336B2Region energy management device and region energy management methodHITACHI LTD·Filed 2020·Granted Oct 29, 2024·0 cites·11 claims
- 4149US10361560B2Power system control instruction device and method for controlling a voltage of a power systemHITACHI LTD·Filed 2014·Granted Jul 23, 2019·0 cites·8 claims
- 4249US8449699B2Cold-rolled steel sheet, method for manufacturing the same, and backlight chassisKIZU TARO·Filed 2009·Granted May 28, 2013·0 cites·9 claims
- 4347US2009108769A1Lighting device and illumination apparatusTOSHIBA LIGHTING & TECHONOLOGY·Filed 2008·Application pending·0 cites
- 4447US2022320869A1Data Processing Device and Data Processing MethodHITACHI LTD·Filed 2020·Application pending·0 cites
- 4547US2008319645A1Route searching method and route searching systemHITACHI LTD·Filed 2008·Application pending·0 cites
- 4647US2009082948A1Traffic incident detection systemHITACHI LTD·Filed 2008·Application pending·0 cites
- 4746US11121553B2Power system stability analysis device, stabilization apparatus, and methodHITACHI LTD·Filed 2017·Granted Sep 14, 2021·0 cites·11 claims
- 4846US7693650B2System and method for collecting and distributing traffic informationZANAVY INFORMATICS KK·Filed 2007·Granted Apr 6, 2010·0 cites·8 claims
- 4945US2016238669A1Power System State Estimation Device and Power System State Estimation Method for SameHITACHI LTD·Filed 2013·Application pending·0 cites
- 5044US2013204528A1Route Guidance System, Route Guidance Server Apparatus and Navigation Terminal ApparatusCLARION CO LTD·Filed 2013·Application pending·0 cites
Showing the top 50 of 66 patent records by PatentIndex Score.
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