Inventor
HAYAMA Tomoharu
JP18 patents
⚠️ This page may combine multiple inventors who share the name “HAYAMA Tomoharu”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IDEMITSU KOSAN CO
16 patentsUS10435350B2Oct 8, 2019
Organic electroluminecence device
IDEMITSU KOSAN CO128 citations99
US10297761B2May 21, 2019
Organic electroluminescent element
IDEMITSU KOSAN CO3 citations73
US9991445B2Jun 5, 2018
Heterocyclic compound, material for organic electroluminescence device including the same, and organic electroluminescence device and electronic equipment employing the same
IDEMITSU KOSAN CO2 citations73
US9963429B2May 8, 2018
Carbazole derivative, material for organic electroluminescent element which comprises same, and organic electroluminescent element and electronic device each manufactured using same
IDEMITSU KOSAN CO2 citations73
US9902687B2Feb 27, 2018
Compound
IDEMITSU KOSAN CO2 citations73
US10217954B2Feb 26, 2019
Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device
IDEMITSU KOSAN CO2 citations62
US10297757B2May 21, 2019
Compound, material for organic electroluminescent elements, organic electroluminescent element and electronic device
IDEMITSU KOSAN CO0 citations52
US10205099B2Feb 12, 2019
Condensed fluoranthene compound, organic electroluminescence element material including same, organic electroluminescence element using same, and electronic device
IDEMITSU KOSAN CO0 citations52
US10118889B2Nov 6, 2018
Compound
IDEMITSU KOSAN CO0 citations52
US10797244B2Oct 6, 2020
Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device
IDEMITSU KOSAN CO0 citations41
US10784446B2Sep 22, 2020
Compound, organic electroluminescence element material, organic electroluminescence element and electronic device
IDEMITSU KOSAN CO0 citations41
US10622569B2Apr 14, 2020
Compound, organic electroluminescent element, and electronic device
IDEMITSU KOSAN CO0 citations41
US10396288B2Aug 27, 2019
Organic electroluminescent element and electronic device
IDEMITSU KOSAN CO0 citations41
US10211404B2Feb 19, 2019
Compound, material for organic electroluminescent elements, organic electroluminescent element and electronic device
IDEMITSU KOSAN CO0 citations41
US9991455B2Jun 5, 2018
Amine compound and organic electroluminescent element
IDEMITSU KOSAN CO0 citations41
US9837615B2Dec 5, 2017
Nitrogen-containing heterocyclic derivative, organic electroluminescence element material using same, and organic electroluminescence element and electronic device using same
IDEMITSU KOSAN CO0 citations41