Inventor · disambiguated record
Kei Yoshida
Also filed as: YOSHIDA KEI
66 granted patents·53 pending applications·453 citations·filing 1979–2025
98Inventor score
Top patents by PatentIndex Score
119 records- 0198US8652654B2Biscarbazole derivative, material for organic electroluminescence device and organic electroluminescence device using the sameINOUE TETSUYA·Filed 2011·Granted Feb 18, 2014·32 cites·29 claims
- 0297US8940414B2Biscarbazole derivative, material for organic electroluminescence device and organic electroluminescence device using the sameINOUE TETSUYA·Filed 2012·Granted Jan 27, 2015·17 cites·40 claims
- 0397US8865323B2Biscarbazole derivative, material for organic electroluminescence device and organic electroluminescence device using the sameINOUE TETSUYA·Filed 2012·Granted Oct 21, 2014·23 cites·30 claims
- 0496US12077500B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2023·Granted Sep 3, 2024·1 cites·20 claims
- 0596US7398849B2Mounting structure of electronic apparatus in vehicleMITSUBISHI FUSO TRUCK & BUS·Filed 2005·Granted Jul 15, 2008·48 cites·4 claims
- 0695US11739061B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2021·Granted Aug 29, 2023·2 cites·15 claims
- 0795US10193077B2Biscarbazole derivative, material for organic electroluminescence device and organic electroluminescence device using the sameIDEMITSU KOSAN CO·Filed 2014·Granted Jan 29, 2019·9 cites·13 claims
- 0895US9905779B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2014·Granted Feb 27, 2018·10 cites·48 claims
- 0994US8877352B2Biscarbazole derivative, material for organic electroluminescence device and organic electroluminescence device using the sameINOUE TETSUYA·Filed 2011·Granted Nov 4, 2014·18 cites·24 claims
- 1093US10590080B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2014·Granted Mar 17, 2020·6 cites·67 claims
- 1192US8067638B2Amide derivative and insecticide containing the sameKAI AKIYOSHI·Filed 2006·Granted Nov 29, 2011·29 cites·9 claims
- 1291US10910565B2Organic electroluminescent element, material for organic electroluminescent elements, and electronic deviceIDEMITSU KOSAN CO·Filed 2015·Granted Feb 2, 2021·5 cites·33 claims
- 1390US10547009B2Organic electroluminescent element, electronic device and compoundIDEMITSU KOSAN CO·Filed 2016·Granted Jan 28, 2020·5 cites·19 claims
- 1490US9604972B2Nitrogen-containing heteroaromatic ring compoundYOSHIDA KEI·Filed 2012·Granted Mar 28, 2017·9 cites·19 claims
- 1590US9266851B2Fluorene-containing aromatic compound, material for organic electroluminescent element, and organic electroluminescent element using sameYOSHIDA KEI·Filed 2010·Granted Feb 23, 2016·10 cites·28 claims
- 1690US6950156B1Reflection type color liquid crystal display device having sub-pixels for increasing luminance, and a light scattering film including color filters for the sub-pixels and manufacturing method thereofKONINKL PHILIPS ELECTRONICS NV·Filed 2000·Granted Sep 27, 2005·37 cites·5 claims
- 1790US4501090AAutomatic door operator for swing doorsCHIKURA KOGYO KK·Filed 1982·Granted Feb 26, 1985·103 cites·3 claims
- 1889US2024400514A1Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2024·Application pending·0 cites
- 1988US12054494B2Compound with anticancer activityKYOWA KIRIN CO LTD·Filed 2023·Granted Aug 6, 2024·1 cites·5 claims
- 2088US8318323B2Polycyclic compounds and organic electroluminescence device employing the sameKATO TOMOKI·Filed 2009·Granted Nov 27, 2012·5 cites·24 claims
- 2187US10276637B2Organic EL multi-color light-emitting deviceMATSUMOTO TOSHIKI·Filed 2012·Granted Apr 30, 2019·7 cites·28 claims
- 2286US2023373947A1Amide derivatives, process for preparation thereof and use thereof as insecticideMITSUI CHEMICALS INC·Filed 2023·Application pending·0 cites
- 2385US11968894B2Organic electroluminescent element, material for organic electroluminescent elements, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Apr 23, 2024·1 cites·25 claims
- 2484US8168825B2Amide derivatives, process for preparation thereof and use thereof as insecticideYOSHIDA KEI·Filed 2004·Granted May 1, 2012·8 cites·10 claims
- 2581US8563736B2Amide derivatives, process for preparation thereof and use thereof as insecticideYOSHIDA KEI·Filed 2012·Granted Oct 22, 2013·1 cites·6 claims
- 2680US11271164B2Compound, composition, organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2017·Granted Mar 8, 2022·2 cites·34 claims
- 2779US10811616B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2018·Granted Oct 20, 2020·1 cites·77 claims
- 2879US10249826B2Compound, organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2015·Granted Apr 2, 2019·2 cites·37 claims
- 2979US2023126981A1Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 3078US11043638B2Organic electroluminescence device and electronic deviceIDEMITSU KOSAN CO·Filed 2015·Granted Jun 22, 2021·2 cites·22 claims
- 3177US11760742B2Amide derivatives, process for preparation thereof and use thereof as insecticideMITSUI CHEMICALS INC·Filed 2021·Granted Sep 19, 2023·0 cites·1 claims
- 3277US9920026B2Amide derivatives, process for preparation thereof and use thereof as insecticideMITSUI CHEMICALS INC·Filed 2015·Granted Mar 20, 2018·1 cites·1 claims
- 3376US12312317B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Granted May 27, 2025·0 cites·10 claims
- 3476US7375777B2Reflection type color liquid crystal display device having sub-pixels for increasing luminance, and a light scattering film including color filters for the sub-pixels and manufacturing method thereofTPO HONG KONG HOLDING LTD·Filed 2005·Granted May 20, 2008·4 cites·10 claims
- 3576US2025230167A1Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2025·Application pending·0 cites
- 3676US2024360149A1Compound with anticancer activityKYOWA KIRIN CO LTD·Filed 2024·Application pending·0 cites
- 3775US9089133B2Insecticide for agricultural or horticultural use and method of use thereofYOSHIDA KEI·Filed 2012·Granted Jul 28, 2015·1 cites·2 claims
- 3874US11629152B2Compound with anticancer activityKYOWA KIRIN CO LTD·Filed 2019·Granted Apr 18, 2023·1 cites·19 claims
- 3974US11059781B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Jul 13, 2021·0 cites·29 claims
- 4074US10995081B2Amide derivatives, process for preparation thereof and use thereof as insecticideMITSUI CHEMICALS INC·Filed 2019·Granted May 4, 2021·0 cites·1 claims
- 4173US9960364B2Ladder compound, and organic electroluminescent element using sameIDEMITSU KOSAN CO·Filed 2013·Granted May 1, 2018·2 cites·15 claims
- 4272US11201297B2Organic electroluminescence device and electronic deviceIDEMITSU KOSAN CO·Filed 2019·Granted Dec 14, 2021·1 cites·36 claims
- 4372US10851055B2Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Dec 1, 2020·0 cites·30 claims
- 4471US9185912B2Amide derivatives, process for preparation thereof and use thereof as insecticideMITSUI CHEMICALS INC·Filed 2014·Granted Nov 17, 2015·0 cites·7 claims
- 4571US2023014964A1Organic electroluminescent element, and electronic apparatusIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 4670US11569456B2Organic electroluminescent element and electronic deviceIDEMITSU KOSAN CO·Filed 2020·Granted Jan 31, 2023·0 cites·13 claims
- 4770US2025084047A1Compound, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 4870US2025098521A1Compound, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 4970US2025089561A1Compound, organic electroluminescent element, and electronic deviceIDEMITSU KOSAN CO·Filed 2022·Application pending·0 cites
- 5069US8710234B2Amide derivatives, process for preparation thereof and use thereof as insecticideMITSUI CHEMICALS INC·Filed 2013·Granted Apr 29, 2014·0 cites·8 claims
Showing the top 50 of 119 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →