LexDanaLexDanabeta
Inventor

Shigetaka Numazawa

Inventor
Tokyo, JP

Overview

6→
Patents
2014–2020
Patent span
Chemistry
Primary field (CPC C)

Patents· 6 as inventor

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

C07Dprimary
C07DHeterocyclic compounds22%
H01LSemiconductor devices17%
H10KOrganic electric solid-state devices17%
C07CAcyclic or carbocyclic compounds9%
C09KMaterials for miscellaneous applications, not provided for elsewhere9%
A61KPreparations for medical, dental or toiletry purposes4%
A61QSpecific use of cosmetics or similar toiletry preparations4%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments4%
G03FPhotomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devices4%
G03GElectrography4%
PatentTitleYear
10,738,019Compound including basic dye and amino acid, hair dyeing dye, and hair dyeing composition20209,985,216Indenoindole derivative and organic electroluminescent element20189,871,210'Naphthotriazole derivatives and organic electroluminescence devices'20189,842,999'Benzotriazole derivative and an organic electroluminescent device'20179,123,897'Benzotriazole derivatives and organic electroluminescent devices using the derivatives'20158,722,288'Diphenylnaphthylamine derivatives'2014

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2014–2020Patents assigned to HODOGAYA CHEMICAL CO LTD (6)· patent assignee history
2014Patents assigned to ABE KATSUMI (1)· patent assignee history
2014Patents assigned to IHARA KIYOTAKA (1)· patent assignee history
2014Patents assigned to KOIKE MAKOTO (1)· patent assignee history
2014Patents assigned to NUMAZAWA SHIGETAKA (1)· patent assignee history
2014–2015Based in Ibaraki, JP· patent location history
2017–2020Based in Tokyo, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HODOGAYA CHEMICAL CO LTD62014–2020
ABE KATSUMI12014
IHARA KIYOTAKA12014
KOIKE MAKOTO12014
NUMAZAWA SHIGETAKAself12014
Locations
LocationPatentsSpan
Tokyo, JP42017–2020
Ibaraki, JP22014–2015