Inventor
HASHIMOTO RYOHEI
JP13 patents
⚠️ This page may combine multiple inventors who share the name “HASHIMOTO RYOHEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
IDEMITSU KOSAN CO
10 patentsUS9905779B2Feb 27, 2018
Organic electroluminescent element and electronic device
IDEMITSU KOSAN CO10 citations84
US9947876B2Apr 17, 2018
Organic electroluminescence device and electronic device
IDEMITSU KOSAN CO11 citations83
US10547009B2Jan 28, 2020
Organic electroluminescent element, electronic device and compound
IDEMITSU KOSAN CO5 citations73
US9960364B2May 1, 2018
Ladder compound, and organic electroluminescent element using same
IDEMITSU KOSAN CO2 citations72
US11569456B2Jan 31, 2023
Organic electroluminescent element and electronic device
IDEMITSU KOSAN CO0 citations62
US10811616B2Oct 20, 2020
Organic electroluminescent element and electronic device
IDEMITSU KOSAN CO1 citations62
US10505123B2Dec 10, 2019
Compound and organic electroluminescent device using same
IDEMITSU KOSAN CO0 citations41
US9842996B2Dec 12, 2017
Amine compound having hetero-fused ring and organic electroluminescent element using amine compound
IDEMITSU KOSAN CO0 citations41
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