Inventor · disambiguated record
Hirokatsu Ito
Also filed as: ITO HIROKATSU
70 granted patents·28 pending applications·261 citations·filing 2006–2025
98Inventor score
Top patents by PatentIndex Score
98 records- 0198US10435350B2Organic electroluminecence deviceIDEMITSU KOSAN CO·Filed 2018·Granted Oct 8, 2019·128 cites·57 claims
- 0296US9099658B2Organic electroluminescence deviceKAWAMURA MASAHIRO·Filed 2013·Granted Aug 4, 2015·16 cites·10 claims
- 0395US10103338B1Organic electroluminescence device and electronic deviceIDEMITSU KOSAN CO·Filed 2017·Granted Oct 16, 2018·7 cites·26 claims
- 0493US9324950B2Organic electroluminescence deviceKAWAMURA YUICHIRO·Filed 2011·Granted Apr 26, 2016·14 cites·18 claims
- 0591US10109803B1Organic electroluminescence device and electronic deviceIDEMITSU KOSAN CO·Filed 2017·Granted Oct 23, 2018·4 cites·30 claims
- 0691US8803420B2Organic electroluminescence deviceKAWAMURA YUICHIRO·Filed 2011·Granted Aug 12, 2014·16 cites·16 claims
- 0790US11548877B2Compound, material for organic electroluminescence device, organic electroluminescence device, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Jan 10, 2023·2 cites·17 claims
- 0889US11117857B2Compound, material for organic electroluminescent elements, organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2016·Granted Sep 14, 2021·3 cites·14 claims
- 0987US10109804B1Organic electroluminescence device and electronic deviceIDEMITSU KOSAN CO·Filed 2017·Granted Oct 23, 2018·2 cites·27 claims
- 1087US10056558B2Aromatic amine derivative, material for organic electroluminescent element, and organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2012·Granted Aug 21, 2018·4 cites·25 claims
- 1187US9353027B2Organic electroluminescent element using pyrene derivativeKAWAMURA MASAHIRO·Filed 2010·Granted May 31, 2016·10 cites·11 claims
- 1286US12492162B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2024·Granted Dec 9, 2025·0 cites·19 claims
- 1385US12384739B2Compound, material for organic electroluminescent elements, organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2023·Granted Aug 12, 2025·0 cites·20 claims
- 1484US9902687B2CompoundIDEMITSU KOSAN CO·Filed 2015·Granted Feb 27, 2018·2 cites·25 claims
- 1584US8883323B2Organic electroluminescence deviceKAWAMURA YUICHIRO·Filed 2011·Granted Nov 11, 2014·16 cites·14 claims
- 1683US10270040B2Oxygen-containing fused ring amine compound, sulfur-containing fused ring amine compound and organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2017·Granted Apr 23, 2019·2 cites·18 claims
- 1783US9818953B2Aromatic amine derivative, material for organic electroluminescent element, and organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2012·Granted Nov 14, 2017·4 cites·36 claims
- 1883US9748494B2Compound, material for organic electroluminescence element, organic electroluminescence element, and electronic apparatusIDEMITSU KOSAN CO·Filed 2014·Granted Aug 29, 2017·2 cites·40 claims
- 1981US10424740B2Compound, material for organic electroluminescence devices, organic electroluminescence device, and electronic deviceIDEMITSU KOSAN CO·Filed 2018·Granted Sep 24, 2019·2 cites·27 claims
- 2081US9484540B2Oxygen-containing fused ring derivative and organic electroluminescence device comprising the sameITO HIROKATSU·Filed 2011·Granted Nov 1, 2016·5 cites·14 claims
- 2180US9748492B2Organic electroluminescent deviceIDEMITSU KOSAN CO·Filed 2013·Granted Aug 29, 2017·3 cites·23 claims
- 2280US9273002B2Benzo[k]fluoranthene derivative and organic electroluminescence device containing the sameITO HIROKATSU·Filed 2011·Granted Mar 1, 2016·3 cites·19 claims
- 2379US9963429B2Carbazole derivative, material for organic electroluminescent element which comprises same, and organic electroluminescent element and electronic device each manufactured using sameIDEMITSU KOSAN CO·Filed 2014·Granted May 8, 2018·2 cites·24 claims
- 2477US9126943B2Nitrogenated heterocyclic ring derivative and organic electroluminescent element comprising sameKAWAMURA MASAHIRO·Filed 2011·Granted Sep 8, 2015·2 cites·23 claims
- 2577US2023200222A1Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2023·Application pending·0 cites
- 2676US12022728B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Granted Jun 25, 2024·0 cites·15 claims
- 2776US9312500B2Organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2013·Granted Apr 12, 2016·3 cites·12 claims
- 2875US12338234B2Compound, material for organic electroluminescence device, organic electroluminescence device, and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Granted Jun 24, 2025·0 cites·21 claims
- 2975US11939279B2Compound, material for organic electroluminescent elements, organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2021·Granted Mar 26, 2024·0 cites·15 claims
- 3075US11744149B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Granted Aug 29, 2023·0 cites·29 claims
- 3173US9947879B2Anthracene derivative and organic electroluminescence element using sameIDEMITSU KOSAN CO·Filed 2014·Granted Apr 17, 2018·2 cites·23 claims
- 3271US11730054B2Compound having dibenzofuran and naphthalene structures, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2022·Granted Aug 15, 2023·0 cites·17 claims
- 3371US9991445B2Heterocyclic compound, material for organic electroluminescence device including the same, and organic electroluminescence device and electronic equipment employing the sameIDEMITSU KOSAN CO·Filed 2014·Granted Jun 5, 2018·2 cites·19 claims
- 3471US9512137B2Organic electroluminescence deviceITO HIROKATSU·Filed 2011·Granted Dec 6, 2016·1 cites·17 claims
- 3571US2023159479A1Compound, material for organic electroluminescence devices, organic electroluminescence device, and electronic deviceIDEMITSU KOSAN CO·Filed 2023·Application pending·0 cites
- 3670US10217954B2Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2014·Granted Feb 26, 2019·2 cites·51 claims
- 3769US11678569B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Granted Jun 13, 2023·0 cites·31 claims
- 3869US9640773B2Aromatic amine derivative and organic electroluminescence element using sameMIZUKI YUMIKO·Filed 2012·Granted May 2, 2017·2 cites·26 claims
- 3967USRE49343EOrganic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2017·Granted Dec 20, 2022·0 cites·54 claims
- 4064US11665962B2Organic electroluminescence element and electronic deviceIDEMITSU KOSAN CO·Filed 2018·Granted May 30, 2023·0 cites·36 claims
- 4164US11552251B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2017·Granted Jan 10, 2023·0 cites·10 claims
- 4263US12048242B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Jul 23, 2024·0 cites·27 claims
- 4363US11618740B2Compound, material for organic electroluminescence devices, organic electroluminescence device, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Apr 4, 2023·0 cites·15 claims
- 4463US10964891B2Pyrene derivative, organic light-emitting medium, and organic electroluminescent element containing pyrene derivative or organic light- emitting mediumIDEMITSU KOSAN CO·Filed 2018·Granted Mar 30, 2021·0 cites·8 claims
- 4563US10118889B2CompoundIDEMITSU KOSAN CO·Filed 2017·Granted Nov 6, 2018·0 cites·44 claims
- 4663US2025338711A1Heterocyclic compound, organic light-emitting device including the same, and electronic apparatus including the organic light-emitting deviceSAMSUNG DISPLAY CO LTD·Filed 2025·Application pending·0 cites
- 4762US12464943B2Compound and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2019·Granted Nov 4, 2025·0 cites·13 claims
- 4861US9755156B2Oxygen-containing fused ring amine compound, sulfur-containing fused ring amine compound and organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2013·Granted Sep 5, 2017·0 cites·25 claims
- 4961US2018323377A1Aromatic amine derivative, material for organic electroluminescent element, and organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2018·Application pending·0 cites
- 5057US2025344602A1Organic compound, light-emitting device including the same, and electronic apparatus including the light-emitting deviceSAMSUNG DISPLAY CO LTD·Filed 2025·Application pending·0 cites
Showing the top 50 of 98 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →