Inventor · disambiguated record
Takahiro Kai
Also filed as: KAI TAKAHIRO
47 granted patents·16 pending applications·560 citations·filing 2005–2022
97Inventor score
Files withNIPPON STEEL & SUMIKIN CHEM CO20KAI TAKAHIRO13NIPPON STEEL CHEMICAL & MAT CO LTD8NIPPON STEEL CHEMICAL CO7TADA MASASHI3
Top patents by PatentIndex Score
63 records- 0198US7993760B2Compound for use in organic electroluminescent device and organic electroluminescent deviceNIPPON STEEL CHEMICAL CO·Filed 2006·Granted Aug 9, 2011·181 cites·12 claims
- 0296US9040962B2Depositing premixed materialsADAMOVICH VADIM·Filed 2010·Granted May 26, 2015·30 cites·20 claims
- 0396US8062769B2Indolocarbazole compound for use in organic electroluminescent device and organic electroluminescent deviceKAI TAKAHIRO·Filed 2007·Granted Nov 22, 2011·36 cites·10 claims
- 0495US8993129B2Fluorescence and delayed fluorescence-type organic light-emitting material and elementENDO AYATAKA·Filed 2010·Granted Mar 31, 2015·185 cites·16 claims
- 0591US8722208B2Organic electroluminescent deviceKAI TAKAHIRO·Filed 2010·Granted May 13, 2014·11 cites·4 claims
- 0687US8962158B2Material having indolocarbazole compound for phosphorescent light-emitting element and organic electroluminescent element using the sameKOMORI MASAKI·Filed 2010·Granted Feb 24, 2015·10 cites·6 claims
- 0787US8703303B2Organic electroluminescent device having a light-emitting layer comprising a host material of two or more compoundsYAMAMOTO TOSHIHIRO·Filed 2009·Granted Apr 22, 2014·15 cites·2 claims
- 0886US9156843B2Organic electroluminescent device comprising an organic layer containing an indolocarbazole compoundKAI TAKAHIRO·Filed 2011·Granted Oct 13, 2015·7 cites·18 claims
- 0985US8795848B2Indolocarbazole derivative with fused heterocyclic aromatic group for organic electroluminescent device and organic electroluminescent device containing sameKAI TAKAHIRO·Filed 2009·Granted Aug 5, 2014·11 cites·10 claims
- 1084US9133205B2Organic electroluminescent deviceKAI TAKAHIRO·Filed 2011·Granted Sep 15, 2015·4 cites·5 claims
- 1184US8906521B2Organic electroluminescent device having triptycene derivative materialSUDA MITSURU·Filed 2010·Granted Dec 9, 2014·7 cites·3 claims
- 1283US8227798B2Compound for organic electroluminescent device and organic electroluminescent deviceKAI TAKAHIRO·Filed 2008·Granted Jul 24, 2012·10 cites·8 claims
- 1381US9614166B2Organic electroluminescent elementNIPPON STEEL & SUMIKIN CHEM CO·Filed 2013·Granted Apr 4, 2017·4 cites·4 claims
- 1481US7605277B2Aminodibenzodioxin derivative and organic electroluminescent using the sameNIPPON STEEL CHEMICAL CO·Filed 2005·Granted Oct 20, 2009·9 cites·9 claims
- 1580US8389131B2Material for use in phosphorescent device and organic electroluminescent device using sameKAI TAKAHIRO·Filed 2010·Granted Mar 5, 2013·4 cites·7 claims
- 1677US9343685B2Organic electroluminescent elementKAI TAKAHIRO·Filed 2011·Granted May 17, 2016·4 cites·6 claims
- 1777US9337432B2Organic electroluminescent elementOGAWA JUNYA·Filed 2011·Granted May 10, 2016·4 cites·9 claims
- 1874US8012606B2Heterocyclic compound and organic electroluminescent device using the sameNIPPON STEEL CHEMICAL CO·Filed 2006·Granted Sep 6, 2011·4 cites·10 claims
- 1974US8013330B2Compound for organic electroluminescent device and organic electroluminescent deviceNIPPON STEEL CHEMICAL CO·Filed 2008·Granted Sep 6, 2011·4 cites·6 claims
- 2071US10468608B2Organic-electroluminescent-element material, and organic electroluminescent element using sameNIPPON STEEL & SUMIKIN CHEM CO·Filed 2016·Granted Nov 5, 2019·1 cites·10 claims
- 2171US9260433B2Organic electroluminescent deviceKAI TAKAHIRO·Filed 2010·Granted Feb 16, 2016·2 cites·6 claims
- 2271US8008657B2Compound for organic electroluminescent device and organic electroluminescent deviceNIPPON STEEL CHEMICAL CO·Filed 2008·Granted Aug 30, 2011·3 cites·6 claims
- 2370US9214637B2Chalcogen-containing aromatic compound, organic semiconductor material, and organic electronic deviceSUDA MITSURU·Filed 2011·Granted Dec 15, 2015·2 cites·17 claims
- 2469US9865829B2Organic electroluminescent element material and organic electroluminescent element using sameNIPPON STEEL & SUMIKIN CHEM CO·Filed 2012·Granted Jan 9, 2018·2 cites·9 claims
- 2566US9985219B2Organic electroluminescent elementNIPPON STEEL & SUMIKIN CHEM CO·Filed 2013·Granted May 29, 2018·2 cites·9 claims
- 2666US8859109B2Compound for organic electroluminescent device and organic electroluminescent device using the sameSAWADA YUICHI·Filed 2009·Granted Oct 14, 2014·2 cites·3 claims
- 2766US8815416B2Organic electroluminescent device using a bipyrimidine compoundKAI TAKAHIRO·Filed 2008·Granted Aug 26, 2014·2 cites·4 claims
- 2865US10361378B2Organic electroluminescent deviceNIPPON STEEL & SUMIKIN CHEM CO·Filed 2013·Granted Jul 23, 2019·1 cites·13 claims
- 2964US10340460B2Organic electroluminescent elementNIPPON STEEL & SUMIKIN CHEM CO·Filed 2013·Granted Jul 2, 2019·1 cites·4 claims
- 3064US9461250B2Organic electroluminescent deviceOGAWA JUNYA·Filed 2010·Granted Oct 4, 2016·1 cites·4 claims
- 3158US2024228496A1Deuteride and organic electroluminescent elementNIPPON STEEL CHEMICAL & MAT CO LTD·Filed 2022·Application pending·0 cites
- 3253US2024237523A1Deuteride and organic electroluminescent elementNIPPON STEEL CHEMICAL & MAT CO LTD·Filed 2022·Application pending·0 cites
- 3353US2024237522A1Deuteride and organic electroluminescent elementNIPPON STEEL CHEMICAL & MAT CO LTD·Filed 2022·Application pending·0 cites
- 3452US2015166886A1Fluorescence and delayed fluorescence-type organic light-emitting material and elementC O NIPPON STEEL & SUMIKIN CHEMICAL CO LTD·Filed 2015·Application pending·0 cites
- 3550US8703302B2Indolocarbazole derivative with aromatic phosphne oxide group for organic electroluminescent device and organic electroluminescent device containing sameKAI TAKAHIRO·Filed 2009·Granted Apr 22, 2014·0 cites·8 claims
- 3650US2011253991A1Organic electroluminescence deviceNIPPON STEEL CHEMICAL CO·Filed 2009·Application pending·0 cites
- 3749US10283721B2Material for organic electroluminescent elements, and organic electroluminescent element using sameNIPPON STEEL & SUMIKIN CHEM CO·Filed 2014·Granted May 7, 2019·0 cites·15 claims
- 3849US2023128732A1Organic electroluminescence element material and organic electroluminescence elementNIPPON STEEL CHEMICAL & MAT CO LTD·Filed 2021·Application pending·0 cites
- 3949US2023142222A1Material for organic electroluminescent element, and organic electroluminescent elementNIPPON STEEL CHEMICAL & MAT CO LTD·Filed 2021·Application pending·0 cites
- 4048US10411198B2Material for organic electroluminescent elements, and organic electroluminescent element using sameNIPPON STEEL & SUMIKIN CHEM CO·Filed 2014·Granted Sep 10, 2019·0 cites·11 claims
- 4148US9978963B2Material for organic electroluminescent elements, and organic electroluminescent element using sameNIPPON STEEL & SUMIKIN CHEM CO·Filed 2014·Granted May 22, 2018·0 cites·7 claims
- 4247US10636981B2Material for organic electroluminescent element and organic electroluminescent element using the sameNIPPON STEEL & SUMIKIN CHEM CO·Filed 2014·Granted Apr 28, 2020·0 cites·11 claims
- 4347US8986858B2Organic electroluminescent deviceTADA MASASHI·Filed 2011·Granted Mar 24, 2015·1 cites·4 claims
- 4447US2023113101A1Organic electroluminescent elementNIPPON STEEL CHEMICAL & MAT CO LTD·Filed 2020·Application pending·0 cites
- 4547US2010127616A1Compound for organic electroluminescent device and organic electroluminescent deviceNIPPON STEEL CHEMICAL CO·Filed 2008·Application pending·0 cites
- 4646US9716238B2Boron compound for organic electroluminescent elements, and organic electroluminescent elementNIPPON STEEL & SUMIKIN CHEM CO·Filed 2014·Granted Jul 25, 2017·0 cites·9 claims
- 4745US8709614B2Organic metal complex and its use in organic electroluminescent deviceYAMAMOTO TOSHIHIRO·Filed 2006·Granted Apr 29, 2014·0 cites·4 claims
- 4845US2023284526A1Organic electroluminescent elementNIPPON STEEL CHEMICAL & MAT CO LTD·Filed 2021·Application pending·0 cites
- 4944US2015218191A1Compound for organic electroluminescent elements, and organic electroluminescent elementNIPPON STEEL & SUMIKIN CHEM CO·Filed 2013·Application pending·0 cites
- 5043US9466802B2Organic electroluminescent elementTADA MASASHI·Filed 2012·Granted Oct 11, 2016·0 cites·7 claims
Showing the top 50 of 63 patent records by PatentIndex Score.
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →