P

Inventor

KAWAMURA YUICHIRO

JP54 patents
⚠️ This page may combine multiple inventors who share the name “KAWAMURA YUICHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

IDEMITSU KOSAN CO

31 patents
US8372527B2Feb 12, 2013

Material for organic electroluminescent element, and organic electroluminescent element

IDEMITSU KOSAN CO22 citations92
US9812661B2Nov 7, 2017

Organic electroluminescent device

IDEMITSU KOSAN CO12 citations84
US8723171B2May 13, 2014

Organic electroluminescence device

IDEMITSU KOSAN CO11 citations84
US9947876B2Apr 17, 2018

Organic electroluminescence device and electronic device

IDEMITSU KOSAN CO11 citations83
US11482675B1Oct 25, 2022

Organic electroluminescence device and electronic apparatus

IDEMITSU KOSAN CO7 citations73
US11043638B2Jun 22, 2021

Organic electroluminescence device and electronic device

IDEMITSU KOSAN CO2 citations73
US10547009B2Jan 28, 2020

Organic electroluminescent element, electronic device and compound

IDEMITSU KOSAN CO5 citations73
US9997717B2Jun 12, 2018

Organic electroluminescence device and electronic device

IDEMITSU KOSAN CO5 citations73
US8748015B2Jun 10, 2014

Indenofluorenedione derivative, material for organic electroluminescent element, and organic electroluminescent element

IDEMITSU KOSAN CO7 citations73
US12492162B2Dec 9, 2025

Organic electroluminescent element and electronic device

IDEMITSU KOSAN CO0 citations63
US12029119B2Jul 2, 2024

Organic electroluminescence element and electronic device

IDEMITSU KOSAN CO0 citations63
US12022728B2Jun 25, 2024

Organic electroluminescent element and electronic device

IDEMITSU KOSAN CO0 citations63
US11552251B2Jan 10, 2023

Organic electroluminescent element and electronic device

IDEMITSU KOSAN CO0 citations63
US11322711B2May 3, 2022

Organic EL light emitting apparatus and electronic instrument

IDEMITSU KOSAN CO0 citations63
US10964891B2Mar 30, 2021

Pyrene derivative, organic light-emitting medium, and organic electroluminescent element containing pyrene derivative or organic light- emitting medium

IDEMITSU KOSAN CO0 citations63
US12317740B2May 27, 2025

Organic electroluminescence device and electronic apparatus

IDEMITSU KOSAN CO0 citations62
US11600780B1Mar 7, 2023

Organic electroluminescence device and electronic apparatus

IDEMITSU KOSAN CO0 citations62
US11271164B2Mar 8, 2022

Compound, composition, organic electroluminescent element and electronic device

IDEMITSU KOSAN CO2 citations62
US11201297B2Dec 14, 2021

Organic electroluminescence device and electronic device

IDEMITSU KOSAN CO1 citations61
US12583864B2Mar 24, 2026

Organic electroluminescent element and electronic device

IDEMITSU KOSAN CO0 citations52
US12396318B2Aug 19, 2025

Organic EL display device, and electronic apparatus

IDEMITSU KOSAN CO0 citations52
US11653511B2May 16, 2023

Organic EL light-emitting apparatus and electronic instrument

IDEMITSU KOSAN CO0 citations52
US11456425B2Sep 27, 2022

Organic electroluminescent element, and electronic apparatus

IDEMITSU KOSAN CO0 citations52
US10854838B2Dec 1, 2020

Organic EL light emitting apparatus and electronic instrument

IDEMITSU KOSAN CO0 citations52
USRE47654EOct 22, 2019

Organic electroluminescence device

IDEMITSU KOSAN CO0 citations52
US10351765B2Jul 16, 2019

Organic electroluminescence element and electronic device

IDEMITSU KOSAN CO0 citations52
US10125310B2Nov 13, 2018

Organic electroluminescence element and electronic device

IDEMITSU KOSAN CO0 citations52
US12538638B2Jan 27, 2026

Organic electroluminescent element and electronic device

IDEMITSU KOSAN CO0 citations51
US12448353B2Oct 21, 2025

Compound, material for organic electroluminescent element, organic electroluminescent element, and electronic device

IDEMITSU KOSAN CO0 citations51
US11723272B2Aug 8, 2023

Organic electroluminescence element and electronic device

IDEMITSU KOSAN CO0 citations51
US11618722B2Apr 4, 2023

Compound, composition, organic electroluminescent element, and electronic appliance

IDEMITSU KOSAN CO0 citations51

KAWAMURA MASAHIRO

3 patents

KAWAMURA YUICHIRO

3 patents

MIZUKI YUMIKO

3 patents

KUMA HITOSHI

2 patents

ITO HIROKATSU

2 patents

NISHIMURA KAZUKI

1 patent

YOSHIDA KEI

1 patent

MORISHITA HIRONOBU

1 patent

MITSUBISHI CHEM CORP

1 patent

YABE MASAYOSHI

1 patent

JINDE YUKITOSHI

1 patent

Showing the top 50 of 54 patents by PatentIndex Score.