Inventor · disambiguated record
Hitoshi Kuma
Also filed as: KUMA HITOSHI
44 granted patents·36 pending applications·411 citations·filing 2002–2024
98Inventor score
Top patents by PatentIndex Score
80 records- 0197US9153790B2Organic electroluminescent deviceKUMA HITOSHI·Filed 2010·Granted Oct 6, 2015·43 cites·14 claims
- 0297US8476823B2Organic electroluminescent deviceKUMA HITOSHI·Filed 2010·Granted Jul 2, 2013·46 cites·17 claims
- 0396US12077500B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2023·Granted Sep 3, 2024·1 cites·20 claims
- 0496US8461574B2Organic electroluminescence deviceNISHIMURA KAZUKI·Filed 2010·Granted Jun 11, 2013·16 cites·11 claims
- 0595US11739061B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2021·Granted Aug 29, 2023·2 cites·15 claims
- 0693US10590080B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2014·Granted Mar 17, 2020·6 cites·67 claims
- 0793US9812661B2Organic electroluminescent deviceIDEMITSU KOSAN CO·Filed 2013·Granted Nov 7, 2017·12 cites·23 claims
- 0893US9324950B2Organic electroluminescence deviceKAWAMURA YUICHIRO·Filed 2011·Granted Apr 26, 2016·14 cites·18 claims
- 0993US8723171B2Organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2013·Granted May 13, 2014·11 cites·12 claims
- 1093US8710493B2Organic electroluminescent elementNISHIMURA KAZUKI·Filed 2011·Granted Apr 29, 2014·21 cites·20 claims
- 1191US9095033B2Organic electroluminescence elementNARAOKA RYO·Filed 2010·Granted Jul 28, 2015·14 cites·16 claims
- 1291US8803420B2Organic electroluminescence deviceKAWAMURA YUICHIRO·Filed 2011·Granted Aug 12, 2014·16 cites·16 claims
- 1390US8987715B2Organic electroluminescence elementNISHIMURA KAZUKI·Filed 2011·Granted Mar 24, 2015·8 cites·18 claims
- 1489US7777413B2Organic electroluminescent device having an optical resonatorIDEMITSU KOSAN CO·Filed 2006·Granted Aug 17, 2010·10 cites·6 claims
- 1589US2024400514A1Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2024·Application pending·0 cites
- 1687US10186665B2Organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2013·Granted Jan 22, 2019·5 cites·32 claims
- 1787US9882144B2Organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2013·Granted Jan 30, 2018·6 cites·23 claims
- 1887US7583021B2Composite emitting deviceMIKAMI AKIYOSHI·Filed 2006·Granted Sep 1, 2009·12 cites·19 claims
- 1986US12492162B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2024·Granted Dec 9, 2025·0 cites·19 claims
- 2086US7550914B2Organic electroluminescence display deviceIDEMITSU KOSAN CO·Filed 2005·Granted Jun 23, 2009·9 cites·10 claims
- 2186US7501189B2White organic electroluminescent deviceIDEMITSU KOSAN CO·Filed 2005·Granted Mar 10, 2009·13 cites·9 claims
- 2285US8076839B2Organic electroluminescence deviceKUMA HITOSHI·Filed 2007·Granted Dec 13, 2011·12 cites·20 claims
- 2384US8883323B2Organic electroluminescence deviceKAWAMURA YUICHIRO·Filed 2011·Granted Nov 11, 2014·16 cites·14 claims
- 2484US7768195B2Organic electroluminescent device with improved luminous efficiencyIDEMITSU KOSAN CO·Filed 2006·Granted Aug 3, 2010·8 cites·23 claims
- 2584US7737625B2Organic electroluminescent device with carrier blocking layer interposed between two emitting layersIDEMITSU KOSAN CO·Filed 2005·Granted Jun 15, 2010·9 cites·11 claims
- 2683US8035297B2Organic electroluminescent device with carrier blocking layer interposed between two emitting layersIDEMITSU KOSAN CO·Filed 2010·Granted Oct 11, 2011·5 cites·18 claims
- 2783US7928647B2Composite emitting deviceAKIYOSHI MIKAMI·Filed 2009·Granted Apr 19, 2011·9 cites·22 claims
- 2879US6844670B2Color luminous deviceIDEMITSU KOSAN CO·Filed 2002·Granted Jan 18, 2005·23 cites·6 claims
- 2978US8106582B2Organic electroluminescence display deviceYAMAMICHI KEIKO·Filed 2005·Granted Jan 31, 2012·8 cites·20 claims
- 3078US7358661B2Organic electroluminescent device and displayIDEMITSU KOSAN CO·Filed 2004·Granted Apr 15, 2008·21 cites·26 claims
- 3177US10297761B2Organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2013·Granted May 21, 2019·3 cites·51 claims
- 3276US12022728B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Granted Jun 25, 2024·0 cites·15 claims
- 3376US11856808B2Organic electroluminescent element and electronic device drivable at low voltage with improved lifetimeIDEMITSU KOSAN CO·Filed 2019·Granted Dec 26, 2023·1 cites·20 claims
- 3474US11059781B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Jul 13, 2021·0 cites·29 claims
- 3574US7956529B2Organic electroluminescent color light-emitting apparatus with organic electroluminescent devices with adjusted optical distances between electrodesIDEMITSU KOSAN CO·Filed 2006·Granted Jun 7, 2011·4 cites·6 claims
- 3672US10851055B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Dec 1, 2020·0 cites·30 claims
- 3772US9184414B2Organic electroluminescent element and lighting deviceNARAOKA RYO·Filed 2011·Granted Nov 10, 2015·2 cites·20 claims
- 3872US7221090B2Blue organic electroluminescent device and display using sameIDEMITSU KOSAN CO·Filed 2005·Granted May 22, 2007·3 cites·15 claims
- 3968US7233104B2Color emission deviceIDEMITSU KOSAN CO·Filed 2003·Granted Jun 19, 2007·12 cites·9 claims
- 4064US11552251B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2017·Granted Jan 10, 2023·0 cites·10 claims
- 4164US7923917B2Color conversion layer and light-emitting deviceIDEMITSU KOSAN CO·Filed 2004·Granted Apr 12, 2011·9 cites·19 claims
- 4255US2016254459A1Organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2016·Application pending·0 cites
- 4355US2019109285A1Organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2018·Application pending·0 cites
- 4455US2008164811A1Organic electroluminescent device and displayIDEMITSU KOSAN CO·Filed 2008·Application pending·0 cites
- 4554US2024409806A1Organic solid up-conversion materialIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 4653USRE47654EOrganic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2011·Granted Oct 22, 2019·0 cites·48 claims
- 4753US7883641B2Metal oxide phosphor microparticle and process for producing the same; utilizing the same, dispersion liquid, fluorescence conversion membrane, method of separating metal oxide phosphor microparticle, fluorescent liquid, fluorescent paste, phosphor and process for producing the same; and fluorescence converterUNIV KEIO·Filed 2009·Granted Feb 8, 2011·1 cites·3 claims
- 4851US2010295027A1Organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2009·Application pending·0 cites
- 4951US2010295445A1Organic electroluminescent deviceIDEMITSU KOSAN CO·Filed 2009·Application pending·0 cites
- 5051US2010314644A1Organic electroluminescent deviceIDEMITSU KOSAN CO·Filed 2009·Application pending·0 cites
Showing the top 50 of 80 patent records by PatentIndex Score.
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