Inventor
NAGASHIMA HIDEAKI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “NAGASHIMA HIDEAKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IDEMITSU KOSAN CO
14 patentsUS10217946B2Feb 26, 2019
Dibenzofurans and dibenzothiophenes
IDEMITSU KOSAN CO2 citations71
US8039121B2Oct 18, 2011
Organic electroluminescence device
IDEMITSU KOSAN CO4 citations63
US11174258B2Nov 16, 2021
Benzimidazolo[1,2-a]benzimidazole derivatives for organic light emitting diodes
IDEMITSU KOSAN CO1 citations62
US10689385B2Jun 23, 2020
Benzimidazolo[1,2-A]benzimidazole carrying aryl- or arylnitril groups for organic light emitting diodes
IDEMITSU KOSAN CO1 citations61
US10968229B2Apr 6, 2021
Seven-membered ring compounds
IDEMITSU KOSAN CO0 citations52
US9714237B2Jul 25, 2017
Material for organic electroluminescent device and organic electroluminescent device using same
IDEMITSU KOSAN CO0 citations52
US8377575B2Feb 19, 2013
Organic electroluminescence device
IDEMITSU KOSAN CO0 citations52
US11616201B2Mar 28, 2023
Specific ladder type compounds for organic light emitting devices
IDEMITSU KOSAN CO0 citations51
US11691983B2Jul 4, 2023
Specifically substituted benzofuro- and benzothienoquinolines for organic light emitting diodes
IDEMITSU KOSAN CO0 citations50
US11279709B2Mar 22, 2022
Specifically substituted aza-dibenzofurans and aza-dibenzothiophenes for organic electronic devices
IDEMITSU KOSAN CO0 citations50
US11289661B2Mar 29, 2022
Nitrogen-containing heterocyclic compounds for organic light emitting devices
IDEMITSU KOSAN CO0 citations49
US9419231B2Aug 16, 2016
Organic electroluminescence device
IDEMITSU KOSAN CO0 citations41
US9496508B2Nov 15, 2016
Material for organic electroluminescent element and organic electroluminescent element using same
IDEMITSU KOSAN CO0 citations40
US10584126B2Mar 10, 2020
1-functionalized dibenzofurans and dibenzothiophenes for organic light emitting diodes (OLEDs)
IDEMITSU KOSAN CO0 citations36
NUMATA MASAKI
3 patentsUS9266865B2Feb 23, 2016
Material for organic electroluminescent element, and organic electroluminescent element using same
NUMATA MASAKI5 citations82
US9199974B2Dec 1, 2015
Material for organic electroluminescent device and organic electroluminescent device using same
NUMATA MASAKI4 citations71
US8895966B2Nov 25, 2014
Material for organic electroluminescence element, and organic electroluminescence element using same
NUMATA MASAKI4 citations71
HITACHI LTD
2 patentsTOKYO SEIMITSU CO LTD
2 patentsNAKANO YUKI
2 patentsUS9978952B2May 22, 2018
Fused heterocyclic aromatic derivative, organic electroluminescence element material, and organic electroluminescence element using same
NAKANO YUKI1 citations51
US9537111B2Jan 3, 2017
Compound, material for organic electroluminescence device, and organic electroluminescence device
NAKANO YUKI0 citations41