Inventor · disambiguated record
Takahiro Fujiyama
Also filed as: FUJIYAMA TAKAHIRO
38 granted patents·19 pending applications·115 citations·filing 1996–2025
96Inventor score
Files withIDEMITSU KOSAN CO25SAMSUNG ELECTRONICS CO LTD20KATO TOMOKI4MITSUI CHEMICALS INC4FUJIYAMA TAKAHIRO2
Top patents by PatentIndex Score
57 records- 0192US11910697B2Copolymer, electroluminescence device material including copolymer, and electroluminescence deviceSAMSUNG ELECTRONICS CO LTD·Filed 2021·Granted Feb 20, 2024·1 cites·17 claims
- 0292US10014477B2Aromatic amine derivative, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2013·Granted Jul 3, 2018·8 cites·13 claims
- 0392US9196842B2Aromatic amine derivative and organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2013·Granted Nov 24, 2015·9 cites·13 claims
- 0489US9564595B2Bis-carbazole derivative and organic electroluminescent element using sameKATO TOMOKI·Filed 2012·Granted Feb 7, 2017·8 cites·18 claims
- 0588US10516112B2Compound, organic electroluminescent element material, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2015·Granted Dec 24, 2019·3 cites·17 claims
- 0688US8980442B2Aromatic amine derivative and organic electroluminescent element using sameYABUNOUCHI NOBUHIRO·Filed 2010·Granted Mar 17, 2015·5 cites·4 claims
- 0785US10756275B2Compound, material for organic electroluminescence devices, organic electroluminescence device, and electronic equipmentIDEMITSU KOSAN CO·Filed 2015·Granted Aug 25, 2020·2 cites·16 claims
- 0885US2025376622A1Copolymer, electroluminescent device material including copolymer, and electroluminescent deviceSAMSUNG ELECTRONICS CO LTD·Filed 2025·Application pending·0 cites
- 0984US10854822B2Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2015·Granted Dec 1, 2020·2 cites·29 claims
- 1083US2025212680A1Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic apparatusIDEMITSU KOSAN CO·Filed 2025·Application pending·0 cites
- 1182US9634255B2Aromatic amine derivative and organic electroluminescence element using sameKATO TOMOKI·Filed 2012·Granted Apr 25, 2017·5 cites·18 claims
- 1282US2024357923A1Nitrogenated aromatic heterocyclic derivative and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2024·Application pending·0 cites
- 1381US12274162B2Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic apparatusIDEMITSU KOSAN CO·Filed 2022·Granted Apr 8, 2025·0 cites·27 claims
- 1481US11616200B2Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic apparatusIDEMITSU KOSAN CO·Filed 2022·Granted Mar 28, 2023·0 cites·30 claims
- 1581US7763727B2Compound and organic electronic device using the sameMITSUI CHEMICALS INC·Filed 2005·Granted Jul 27, 2010·8 cites·5 claims
- 1679US2022285620A1Aromatic amine derivative, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 1778US9882134B2Polymer compound, material for organic electroluminescence element using same, and organic electroluminescence elementIDEMITSU KOSAN CO·Filed 2014·Granted Jan 30, 2018·3 cites·13 claims
- 1878US9184395B2Aromatic amine derivative and organic electroluminescent element using sameKATO TOMOKI·Filed 2012·Granted Nov 10, 2015·4 cites·12 claims
- 1977US12466947B2Copolymer, electroluminescence device material including copolymer, and electroluminescence deviceSAMSUNG ELECTRONICS CO LTD·Filed 2024·Granted Nov 11, 2025·0 cites·18 claims
- 2076US11997917B2Quantum dot electroluminescence deviceSAMSUNG ELECTRONICS CO LTD·Filed 2023·Granted May 28, 2024·0 cites·10 claims
- 2176US10043977B2Nitrogenated aromatic heterocyclic derivative, and organic electroluminescent element using sameKATO TOMOKI·Filed 2012·Granted Aug 7, 2018·1 cites·22 claims
- 2276US8294144B2Organic transistorFUJIYAMA TAKAHIRO·Filed 2008·Granted Oct 23, 2012·3 cites·2 claims
- 2375US10411192B2Aromatic amine compound, organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2014·Granted Sep 10, 2019·2 cites·31 claims
- 2473US11444246B2Aromatic amine derivative, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2020·Granted Sep 13, 2022·0 cites·18 claims
- 2573US11362279B2Aromatic amine derivative, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2020·Granted Jun 14, 2022·0 cites·11 claims
- 2673US9966539B2Organic electroluminescence deviceIDEMITSU KOSAN CO·Filed 2013·Granted May 8, 2018·1 cites·34 claims
- 2772US2024158566A1Polymer compound, and electroluminescent device material and electroluminescent device including polymer compoundSAMSUNG ELECTRONICS CO LTD·Filed 2023·Application pending·0 cites
- 2872US2019259948A1Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic apparatusIDEMITSU KOSAN CO·Filed 2019·Application pending·0 cites
- 2971US2024247104A1Polymer compound, composition, organic film, and electroluminescent device comprising polymer compound, and method of preparing electroluminescent deviceSAMSUNG ELECTRONICS CO LTD·Filed 2023·Application pending·0 cites
- 3070US11939422B2Copolymer, electroluminescence device material including copolymer, and electroluminescence deviceSAMSUNG ELECTRONICS CO LTD·Filed 2021·Granted Mar 26, 2024·0 cites·20 claims
- 3168US12384965B2Copolymer, electroluminescent device material including copolymer, and electroluminescent deviceSAMSUNG ELECTRONICS CO LTD·Filed 2021·Granted Aug 12, 2025·0 cites·10 claims
- 3268US11631815B2Quantum dot electroluminescence deviceSAMSUNG ELECTRONICS CO LTD·Filed 2019·Granted Apr 18, 2023·0 cites·6 claims
- 3368US2018123043A1Aromatic amine derivative, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2017·Application pending·0 cites
- 3466US12173114B2Copolymer, electroluminescence device material including copolymer, and electroluminescence deviceSAMSUNG ELECTRONICS CO LTD·Filed 2021·Granted Dec 24, 2024·0 cites·14 claims
- 3565US10985325B2Aromatic amine derivative, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2013·Granted Apr 20, 2021·1 cites·16 claims
- 3664US6245257B1Liquid crystal compositionsMITSUI CHEMICALS INC·Filed 1998·Granted Jun 12, 2001·24 cites·5 claims
- 3763US12063851B2Nitrogenated aromatic heterocyclic derivative and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2018·Granted Aug 13, 2024·0 cites·23 claims
- 3861US2016329492A1Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic apparatusIDEMITSU KOSAN CO·Filed 2015·Application pending·0 cites
- 3960US11411188B2Arylamine polymer including silicone, and electroluminescence device material and electroluminescence device using the polymerSAMSUNG ELECTRONICS CO LTD·Filed 2019·Granted Aug 9, 2022·0 cites·14 claims
- 4060US10944057B2Compound, material for organic electroluminescence devices, organic electroluminescence device, and electronic equipmentIDEMITSU KOSAN CO·Filed 2015·Granted Mar 9, 2021·0 cites·17 claims
- 4159US2025311610A1Copolymer, and composition, liquid composition, and electroluminsecnt device including the copolymerSAMSUNG ELECTRONICS CO LTD·Filed 2025·Application pending·0 cites
- 4259US2025311611A1Polymeric compound, and electroluminescence device material and electroluminescence device including the polymeric compoundSAMSUNG ELECTRONICS CO LTD·Filed 2025·Application pending·0 cites
- 4358US2025311608A1Polymeric compound, electroluminescence device materilal and liquid composition including the polymeric compound, and electroluminescence device including the materialSAMSUNG ELECTRONICS CO LTD·Filed 2025·Application pending·0 cites
- 4457US5955209AThin-film electroluminescent deviceMITSUI PETROCHEMICAL IND·Filed 1996·Granted Sep 21, 1999·19 cites·18 claims
- 4556US2023212334A1Polymer, electroluminescence material, electroluminescence device, and electronic deviceSAMSUNG ELECTRONICS CO LTD·Filed 2023·Application pending·0 cites
- 4656US2023212335A1Polymeric Compound, Electroluminescent Device Material, Electroluminescent Device, and Electronic DeviceSAMSUNG ELECTRONICS CO LTD·Filed 2023·Application pending·0 cites
- 4755US11917899B2Arylamine-fluorene alternating copolymer, electroluminescence device material, and electroluminescence device using the polymerSAMSUNG ELECTRONICS CO LTD·Filed 2021·Granted Feb 27, 2024·0 cites·9 claims
- 4855US2023126748A1Polymer, a composition, and an electroluminescent deviceSAMSUNG ELECTRONICS CO LTD·Filed 2022·Application pending·0 cites
- 4948US11758800B2Polymer material, material for electroluminescence device, liquid composition, thin film, and electroluminescence deviceSAMSUNG ELECTRONICS CO LTD·Filed 2020·Granted Sep 12, 2023·0 cites·15 claims
- 5048US2016133847A1Aromatic amine derivative and organic electroluminescent elementIDEMITSU KOSAN CO·Filed 2014·Application pending·0 cites
Showing the top 50 of 57 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →