Inventor
KAI TAKAHIRO
JP48 patents
⚠️ This page may combine multiple inventors who share the name “KAI TAKAHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NIPPON STEEL & SUMIKIN CHEM CO
15 patentsUS9614166B2Apr 4, 2017
Organic electroluminescent element
NIPPON STEEL & SUMIKIN CHEM CO4 citations73
US9865829B2Jan 9, 2018
Organic electroluminescent element material and organic electroluminescent element using same
NIPPON STEEL & SUMIKIN CHEM CO2 citations72
US9985219B2May 29, 2018
Organic electroluminescent element
NIPPON STEEL & SUMIKIN CHEM CO2 citations69
US10468608B2Nov 5, 2019
Organic-electroluminescent-element material, and organic electroluminescent element using same
NIPPON STEEL & SUMIKIN CHEM CO1 citations61
US10361378B2Jul 23, 2019
Organic electroluminescent device
NIPPON STEEL & SUMIKIN CHEM CO1 citations61
US10340460B2Jul 2, 2019
Organic electroluminescent element
NIPPON STEEL & SUMIKIN CHEM CO1 citations60
US10807996B2Oct 20, 2020
Material for organic electroluminescent element and organic electroluminescent element in which same is used
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US10636981B2Apr 28, 2020
Material for organic electroluminescent element and organic electroluminescent element using the same
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US10529932B2Jan 7, 2020
Organic-electroluminescent-element material and organic electroluminescent element using same
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US10446767B2Oct 15, 2019
Organic-electroluminescent-element material and organic electroluminescent element using same
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US10411198B2Sep 10, 2019
Material for organic electroluminescent elements, and organic electroluminescent element using same
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US10305048B2May 28, 2019
Organic-electroluminescent-element material and organic electroluminescent elements using same
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US10283721B2May 7, 2019
Material for organic electroluminescent elements, and organic electroluminescent element using same
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US9978963B2May 22, 2018
Material for organic electroluminescent elements, and organic electroluminescent element using same
NIPPON STEEL & SUMIKIN CHEM CO0 citations40
US9716238B2Jul 25, 2017
Boron compound for organic electroluminescent elements, and organic electroluminescent element
NIPPON STEEL & SUMIKIN CHEM CO0 citations38
KAI TAKAHIRO
13 patentsUS8062769B2Nov 22, 2011
Indolocarbazole compound for use in organic electroluminescent device and organic electroluminescent device
KAI TAKAHIRO36 citations92
US8795848B2Aug 5, 2014
Indolocarbazole derivative with fused heterocyclic aromatic group for organic electroluminescent device and organic electroluminescent device containing same
KAI TAKAHIRO11 citations84
US9156843B2Oct 13, 2015
Organic electroluminescent device comprising an organic layer containing an indolocarbazole compound
KAI TAKAHIRO7 citations83
US8722208B2May 13, 2014
Organic electroluminescent device
KAI TAKAHIRO11 citations83
US8227798B2Jul 24, 2012
Compound for organic electroluminescent device and organic electroluminescent device
KAI TAKAHIRO10 citations83
US9133205B2Sep 15, 2015
Organic electroluminescent device
KAI TAKAHIRO4 citations72
US9343685B2May 17, 2016
Organic electroluminescent element
KAI TAKAHIRO4 citations71
US9260433B2Feb 16, 2016
Organic electroluminescent device
KAI TAKAHIRO2 citations62
US8815416B2Aug 26, 2014
Organic electroluminescent device using a bipyrimidine compound
KAI TAKAHIRO2 citations62
US8389131B2Mar 5, 2013
Material for use in phosphorescent device and organic electroluminescent device using same
KAI TAKAHIRO4 citations62
US9299947B2Mar 29, 2016
Organic electroluminescent device having an electron- and /or exciton-blocking layer comprising an indolocarbazole compound
KAI TAKAHIRO0 citations41
US9290498B2Mar 22, 2016
Organic electroluminescent device having an electron- and/or exciton-blocking layer comprising an indolocarbazole compound
KAI TAKAHIRO0 citations41
US8703302B2Apr 22, 2014
Indolocarbazole derivative with aromatic phosphne oxide group for organic electroluminescent device and organic electroluminescent device containing same
KAI TAKAHIRO0 citations41
NIPPON STEEL CHEMICAL CO
5 patentsUS7993760B2Aug 9, 2011
Compound for use in organic electroluminescent device and organic electroluminescent device
NIPPON STEEL CHEMICAL CO181 citations98
US7605277B2Oct 20, 2009
Aminodibenzodioxin derivative and organic electroluminescent using the same
NIPPON STEEL CHEMICAL CO9 citations79
US8013330B2Sep 6, 2011
Compound for organic electroluminescent device and organic electroluminescent device
NIPPON STEEL CHEMICAL CO4 citations62
US8012606B2Sep 6, 2011
Heterocyclic compound and organic electroluminescent device using the same
NIPPON STEEL CHEMICAL CO4 citations62
US8008657B2Aug 30, 2011
Compound for organic electroluminescent device and organic electroluminescent device
NIPPON STEEL CHEMICAL CO3 citations62