Inventor · disambiguated record
Makoto Nagaoka
Also filed as: NAGAOKA MAKOTO
31 granted patents·11 pending applications·122 citations·filing 1984–2023
95Inventor score
Files withHODOGAYA CHEMICAL CO LTD14YOKOYAMA NORIMASA12HORIBA LTD4PENTEL KK3TOYOTA CHUO KENKYUSHO KK3
Top patents by PatentIndex Score
42 records- 0184US7712684B2Fuel injection valveTOYOTA CHUO KENKYUSHO KK·Filed 2005·Granted May 11, 2010·13 cites·10 claims
- 0283US8735626B2Method of producing aromatic amino compoundsYOKOYAMA NORIMASA·Filed 2010·Granted May 27, 2014·3 cites·7 claims
- 0378US9705099B2Phosphorescent organic light emitting devices having a hole transporting cohost material in the emissive regionUNIVERSAL DISPLAY CORP·Filed 2013·Granted Jul 11, 2017·4 cites·29 claims
- 0478US8252431B2Compound wherein substituted bipyridyl group is connected with pyridoindole ring structure through phenylene group, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2008·Granted Aug 28, 2012·2 cites·20 claims
- 0575US9732036B2Compound having carbazole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Aug 15, 2017·2 cites·11 claims
- 0674US9818949B2Compound having acridan ring structure, and organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted Nov 14, 2017·2 cites·16 claims
- 0774US9196837B2Compound having indenocarbazole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Granted Nov 24, 2015·3 cites·18 claims
- 0874US5990449AElectric heating device for mirrorPENTEL KK·Filed 1994·Granted Nov 23, 1999·39 cites·7 claims
- 0973US9985216B2Indenoindole derivative and organic electroluminescent elementHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted May 29, 2018·1 cites·6 claims
- 1072US9882136B2Organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2013·Granted Jan 30, 2018·1 cites·4 claims
- 1169US9306175B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Apr 5, 2016·2 cites·13 claims
- 1269US9196839B2Compound having triphenylamine structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Granted Nov 24, 2015·1 cites·4 claims
- 1369US4612433AThermal head and manufacturing method thereofPENTEL KK·Filed 1984·Granted Sep 16, 1986·15 cites·10 claims
- 1467US8852759B2Compound having acridan ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Granted Oct 7, 2014·1 cites·6 claims
- 1566US7812341B2Compound having oxadiazole ring structure substituted with pyridyl group, and organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2005·Granted Oct 12, 2010·2 cites·27 claims
- 1663US9238624B2Method of producing aromatic amino compoundsHODOGAYA CHEMICAL CO LTD·Filed 2013·Granted Jan 19, 2016·0 cites·6 claims
- 1762US9705092B2Phosphorescent organic light emitting devices combined with hole transport material having high operating stabilityYAMAMOTO HITOSHI·Filed 2011·Granted Jul 11, 2017·1 cites·19 claims
- 1862US9564600B2Compound having an indolocarbazole ring structure and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Feb 7, 2017·1 cites·3 claims
- 1959US2025173483A1Machine learning device, vehicle testing system, machine learning method, and vehicle testing methodHORIBA LTD·Filed 2023·Application pending·0 cites
- 2058US2024418638A1Machine learning device, exhaust gas analysis device, machine learning method, exhaust gas analysis method, machine learning program, and exhaust gas analysis programHORIBA LTD·Filed 2022·Application pending·0 cites
- 2157US7977671B2Compound having oxadiazole ring structure substituted with pyridyl group and organic electroluminescence deviceHODOGAYA CHEMICAL CO LTD·Filed 2009·Granted Jul 12, 2011·0 cites·25 claims
- 2257US2023255903A1Urinary symptom therapeutic agentTAIHO PHARMACEUTICAL CO LTD·Filed 2021·Application pending·0 cites
- 2352US8642189B2Substituted bipyridyl compound and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2009·Granted Feb 4, 2014·0 cites·11 claims
- 2452US5440080AInformation input devicePENTEL KK·Filed 1993·Granted Aug 8, 1995·24 cites·27 claims
- 2549US10947886B2Catalyst state estimation apparatus, catalyst state estimation method with information processing apparatus, and non-transitory recording medium in which program is storedTOYOTA MOTOR CO LTD·Filed 2019·Granted Mar 16, 2021·0 cites·18 claims
- 2649US2023296501A1Analysis device, analysis method, program for analysis device, learning device for analysis, learning method for analysis, and program for learning device for analysisHORIBA LTD·Filed 2021·Application pending·0 cites
- 2748US2025146852A1Pitot tube flowmeter, gas analysis device, and gas analysis methodHORIBA LTD·Filed 2023·Application pending·0 cites
- 2847US11215592B2Method and device for isolating and analyzing target substance in solutionMITSUI MINING & SMELTING CO LTD·Filed 2019·Granted Jan 4, 2022·0 cites·15 claims
- 2946US9837620B2Benzopyridoindole derivative and organic electroluminescent elementHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted Dec 5, 2017·0 cites·12 claims
- 3045US9905770B2Compound having acridan ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2012·Granted Feb 27, 2018·0 cites·16 claims
- 3145US2015060803A1Compound having acridan ring structure, and organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2013·Application pending·0 cites
- 3244US2018266344A1Internal combustion engineTOYOTA CHUO KENKYUSHO KK·Filed 2018·Application pending·0 cites
- 3343US9842999B2Benzotriazole derivative and an organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted Dec 12, 2017·0 cites·11 claims
- 3443US2010090588A1Compound having triazine ring structure substituted with pyridyl group and organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2007·Application pending·0 cites
- 3542US9871210B2Naphthotriazole derivatives and organic electroluminescence devicesHODOGAYA CHEMICAL CO LTD·Filed 2014·Granted Jan 16, 2018·0 cites·13 claims
- 3642US9306174B2Organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2010·Granted Apr 5, 2016·0 cites·6 claims
- 3741US2013112950A1Compound having carbazole ring structure, and organic electroluminescent deviceYOKOYAMA NORIMASA·Filed 2011·Application pending·0 cites
- 3839US10557450B2Internal combustion engineTOYOTA CHUO KENKYUSHO KK·Filed 2017·Granted Feb 11, 2020·0 cites·6 claims
- 3935US2018175301A1Arylamine compound and organic electroluminescent deviceHODOGAYA CHEMICAL CO LTD·Filed 2016·Application pending·0 cites
- 4034US5665506AToner for the development of electrostatic image and process for the preparation thereofHODOGAYA CHEMICAL CO LTD·Filed 1996·Granted Sep 9, 1997·4 cites·4 claims
- 4133US2016351823A1Benzofuroindole derivative and organic electroluminescence deviceHODOGAYA CHEMICAL CO LTD·Filed 2015·Application pending·0 cites
- 4216US6307542B1Magnet-based information input apparatusJAPAN RADIO CO LTD·Filed 1999·Granted Oct 23, 2001·1 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →