LexDanaLexDanabeta
Inventor

Keiji Okinaka

Inventor
Kawasaki, JP

Overview

41→
Patents
2006–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 41 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H10Kprimary
H10KOrganic electric solid-state devices22%
C09KMaterials for miscellaneous applications, not provided for elsewhere21%
H05BElectric heating16%
Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests11%
C07CAcyclic or carbocyclic compounds11%
C07DHeterocyclic compounds7%
H01LSemiconductor devices4%
Y10TTechnical subjects covered by former us classification3%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments2%
C07BGeneral methods of organic chemistry1%
PatentTitleYear
11,059,781Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device202110,851,055Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device202010,590,080Compound, material for organic electroluminescent elements, organic electroluminescent element, and electronic device20209,705,087'Organic light emitting device'20179,331,296'Organic light-emitting device'20169,312,494'Organic light emitting device'20168,808,875'Compound and organic EL device'20148,691,398'4-aminofluorene compound and organic light emitting device'20148,519,613'Organic light-emitting device'20138,404,363'Organic light emitting device'20138,384,286'Compound and organic light emitting device using the compound'20138,354,788'Organic light emitting device'20138,318,395'Dibenzoanthracene compound and organic light emitting device having the same'20128,318,321'Compound and organic light-emitting device'20128,288,017'Fused ring aromatic compound and organic light-emitting device using same'20128,227,094'Organic electroluminescent device'20128,102,116'Organic light-emitting device'20128,084,147'Organic light-emitting device'20118,072,136'Compound and organic light emitting device using the compound'20118,026,664'Compound and organic light emitting device'20117,998,597'Organic light emitting device'20117,982,213'Phenanthroline compound and organic light emitting device using same'20117,960,041'Fused ring aromatic compound and organic light-emitting device using same'20117,952,269'Organic light-emitting device'20117,932,592'Compound and organic light-emitting element'20117,919,199'Organic light emitting device'20117,785,719'Fluorene compound and organic light-emitting device'20107,709,104'Aminoanthryl derivative-substituted pyrene compound and organic light-emitting device'20107,691,492'Fluorene compound and organic light-emitting device using same'20107,604,873'Organic light emitting device'20097,550,594'Phenanthroline compound and organic light emitting device using same'20097,491,450'Organic electroluminescent device'20097,466,074'Organic light-emitting device'20087,375,250'Aminoanthryl derivative substitution compound and organic electroluminescence device using the same'20087,358,409'Substituted anthryl derivative and electroluminescence device using the same'20087,355,339'Organic electroluminescent display and apparatus including organic electroluminescent display'20087,309,533'Substituted anthryl derivative and electroluminescence device using the same'20077,173,131'Anthryl derivative group substituted compound, and organic luminescent device making use of same'20077,129,386'Substituted anthryl derivative and electroluminescence device using the same'20067,034,454'Organic light emitting device with reverse intersystem crossing light emitting molecules'20066,985,259'Threshold matrix, and method and apparatus of reproducing gray levels using threshold matrix'2006

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2006–2017Patents assigned to CANON KK (38)· patent assignee history
2006–2009Based in Kanagawa, JP· patent location history
2006Based in Ichikawa, JP· patent location history
2008–2017Based in Kawasaki, JP· patent location history
2011–2016Patents assigned to OKINAKA KEIJI (15)· patent assignee history
2011–2016Patents assigned to YAMADA NAOKI (12)· patent assignee history
2011–2014Patents assigned to HASHIMOTO MASASHI (9)· patent assignee history
2011–2014Patents assigned to IGAWA SATOSHI (9)· patent assignee history
2016Based in Narashino, JP· patent location history
2020–2021Based in Sodegaura, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
CANON KK382006–2017
OKINAKA KEIJIself152011–2016
YAMADA NAOKI122011–2016
HASHIMOTO MASASHI92011–2014
IGAWA SATOSHI92011–2014
Locations
LocationPatentsSpan
Kawasaki, JP292008–2017
Kanagawa, JP72006–2009
Sodegaura, JP32020–2021
Narashino, JP12016
Ichikawa, JP12006