Inventor
IKEDA HIDETSUGU
JP66 patents
⚠️ This page may combine multiple inventors who share the name “IKEDA HIDETSUGU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IDEMITSU KOSAN CO
37 patentsUS10249832B1Apr 2, 2019
Organic electroluminescence device and novel compound
IDEMITSU KOSAN CO32 citations98
US6534199B1Mar 18, 2003
Organic electroluminescence device and organic light emitting medium
IDEMITSU KOSAN CO130 citations98
US7053255B2May 30, 2006
Substituted diphenylanthracene compounds for organic electroluminescence devices
IDEMITSU KOSAN CO102 citations97
US6951693B2Oct 4, 2005
Organic electroluminescence device
IDEMITSU KOSAN CO88 citations97
US6743948B1Jun 1, 2004
Organic electroluminescent device
IDEMITSU KOSAN CO118 citations97
US7839074B2Nov 23, 2010
Organic electroluminescence device and anthracene derivative
IDEMITSU KOSAN CO39 citations96
US10680181B2Jun 9, 2020
Organic electroluminescence device and novel compound
IDEMITSU KOSAN CO11 citations94
US7846560B2Dec 7, 2010
Material for organic electroluminescence device and electroluminescence device employing the same
IDEMITSU KOSAN CO20 citations93
US7790892B2Sep 7, 2010
Aromatic compound and organic electroluminescent element containing the same
IDEMITSU KOSAN CO35 citations93
US7651791B2Jan 26, 2010
Material for organic electroluminescence device and electroluminescence device employing the same
IDEMITSU KOSAN CO23 citations93
US7429425B2Sep 30, 2008
Oligoarylene derivatives and organic electroluminescent devices made by using the same
IDEMITSU KOSAN CO20 citations93
US7361796B2Apr 22, 2008
Orangic electroluminescence device
IDEMITSU KOSAN CO21 citations92
US6818327B2Nov 16, 2004
Organic electroluminescence device
IDEMITSU KOSAN CO26 citations92
US6815090B1Nov 9, 2004
Organic electroluminescence device
IDEMITSU KOSAN CO36 citations92
US6489046B1Dec 3, 2002
Organic electroluminescence device
IDEMITSU KOSAN CO37 citations91
US6221517B1Apr 24, 2001
Fluorescence-reddening membrane and red-emitting device
IDEMITSU KOSAN CO18 citations90
US10593889B1Mar 17, 2020
Compound and organic electroluminescence device
IDEMITSU KOSAN CO14 citations86
US10672989B2Jun 2, 2020
Organic electroluminescence device and novel compound
IDEMITSU KOSAN CO6 citations84
US10658594B2May 19, 2020
Organic electroluminescence device and novel compound
IDEMITSU KOSAN CO6 citations84
US10230058B2Mar 12, 2019
Compound, organic electroluminescence device and electronic device
IDEMITSU KOSAN CO6 citations84
US9954187B2Apr 24, 2018
Compound, organic electroluminescence device and electronic device
IDEMITSU KOSAN CO6 citations84
US9583716B2Feb 28, 2017
Organic electroluminescence device and anthracene derivative
IDEMITSU KOSAN CO11 citations84
US8911886B2Dec 16, 2014
Material for organic electroluminescent devices and organic electroluminescent devices made by using the same
IDEMITSU KOSAN CO4 citations84
US7990046B2Aug 2, 2011
Material for organic electroluminescent devices and organic electroluminescent devices made by using the same
IDEMITSU KOSAN CO9 citations84
US7867629B2Jan 11, 2011
Nitrogenous heterocyclic derivative and organic electroluminescent element employing the same
IDEMITSU KOSAN CO17 citations84
US7709102B2May 4, 2010
Organic electroluminescence device
IDEMITSU KOSAN CO8 citations84
US12262634B2Mar 25, 2025
Organic electroluminescence device and novel compound
IDEMITSU KOSAN CO2 citations75
US12108666B2Oct 1, 2024
Compound and organic electroluminescence device
IDEMITSU KOSAN CO2 citations73
US11569449B2Jan 31, 2023
Organic electroluminescence device and novel compound
IDEMITSU KOSAN CO2 citations73
US11557730B2Jan 17, 2023
Organic electroluminescence device and novel compound
IDEMITSU KOSAN CO2 citations73
US11489123B2Nov 1, 2022
Compound, organic electroluminescence device and electronic device
IDEMITSU KOSAN CO2 citations73
US12029119B2Jul 2, 2024
Organic electroluminescence element and electronic device
IDEMITSU KOSAN CO0 citations63
USRE49118EJun 28, 2022
Material for organic electroluminescence device and electroluminescence device employing the same
IDEMITSU KOSAN CO0 citations63
US8039121B2Oct 18, 2011
Organic electroluminescence device
IDEMITSU KOSAN CO4 citations63
US7939183B2May 10, 2011
Material for organic electroluminescent device and organic electroluminescent device using same
IDEMITSU KOSAN CO2 citations63
US6159904ADec 12, 2000
Pyrazole derivatives
IDEMITSU KOSAN CO6 citations63
US11342512B2May 24, 2022
Compounds for organic electroluminescence device
IDEMITSU KOSAN CO1 citations62
IWAKUMA TOSHIHIRO
5 patentsUS8685543B2Apr 1, 2014
Material for organic electroluminescent devices and organic electroluminescent devices made by using the same
IWAKUMA TOSHIHIRO4 citations84
US8580391B2Nov 12, 2013
Material for organic electroluminescence devices and organic electroluminescence device using the material
IWAKUMA TOSHIHIRO6 citations84
US8741450B2Jun 3, 2014
Material for organic electroluminescence devices and organic electroluminescence device using the material
IWAKUMA TOSHIHIRO4 citations73
US8563145B2Oct 22, 2013
Material containing two or three dibenzofuran groups, dibenzothiophene groups, or a combination thereof, which is operable for organic electroluminescence elements, and organic electroluminescence elements using the material
IWAKUMA TOSHIHIRO5 citations73
US8580398B2Nov 12, 2013
Material for organic electroluminescent devices and organic electroluminescent devices made by using the same
IWAKUMA TOSHIHIRO2 citations62
SEIKOSHA KK
3 patentsIKEDA HIDETSUGU
2 patentsSEIKO PRECISION KK
1 patentIDEMITSU KOSAN LTD
1 patentMITSUI ALUMINIUM CO LTD
1 patentShowing the top 50 of 66 patents by PatentIndex Score.