Shigetaka Numazawa

Person

Ibaraki, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Compound including basic dye and amino acid, hair dyeing dye, and h...
- Patent number 10,738,019
- Issue date Aug 11, 2020
- Hodogaya Chemical Co., Ltd.
- Keigo Naito
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Indenoindole derivative and organic electroluminescent element
- Patent number 9,985,216
- Issue date May 29, 2018
- Hodogaya Chemical Co., Ltd.
- Makoto Nagaoka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Naphthotriazole derivatives and organic electroluminescence devices
- Patent number 9,871,210
- Issue date Jan 16, 2018
- Hodogaya Chemical Co., Ltd.
- Makoto Nagaoka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Benzotriazole derivative and an organic electroluminescent device
- Patent number 9,842,999
- Issue date Dec 12, 2017
- Hodogaya Chemical Co., Ltd.
- Makoto Nagaoka
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Benzotriazole derivatives and organic electroluminescent devices us...
- Patent number 9,123,897
- Issue date Sep 1, 2015
- Hodogaya Chemical Co., Ltd.
- Norimasa Yokoyama
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Diphenylnaphthylamine derivatives
- Patent number 8,722,288
- Issue date May 13, 2014
- Hodogaya Chemical Co., Ltd.
- Shigetaka Numazawa
- C07 - ORGANIC CHEMISTRY

Patents Applicationslast 30 patents

Information Patent Application
COMPOUND CONTAINING BASIC DYE AND AMINO ACID, HAIR DYING DYE, AND H...
- Publication number 20200071283
- Publication date Mar 5, 2020
- Hodogaya Chemical Co., Ltd.
- Keigo NAITO
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
A BENZOTRIAZOLE DERIVATIVE AND AN ORGANIC ELECTROLUMINESCENT DEVICE
- Publication number 20160164001
- Publication date Jun 9, 2016
- Hodogaya Chemical Co., Ltd.
- Makoto NAGAOKA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
INDENOINDOLE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT
- Publication number 20160126468
- Publication date May 5, 2016
- Hodogaya Chemical Co., Ltd.
- Makoto NAGAOKA
- C07 - ORGANIC CHEMISTRY
Information Patent Application
NOVEL NAPHTHOTRIAZOLE DERIVATIVES AND ORGANIC ELECTROLUMINESCENCE D...
- Publication number 20160005982
- Publication date Jan 7, 2016
- Hodogaya Chemical Co., Ltd.
- Makoto NAGAOKA
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
NOVEL BENZOTRIAZOLE DERIVATIVES AND ORGANIC ELECTROLUMINESCENT DEVI...
- Publication number 20140374721
- Publication date Dec 25, 2014
- Hodogaya Chemical Co., Ltd.
- Norimasa Yokoyama
- C07 - ORGANIC CHEMISTRY
Information Patent Application
TRIPHENYLAMINE DERIVATIVES
- Publication number 20130071780
- Publication date Mar 21, 2013
- Hodogaya Chemical Co., Ltd.
- Shigetaka Numazawa
- C07 - ORGANIC CHEMISTRY
Information Patent Application
DIPHENYLNAPHTHYLAMINE DERIVATIVES
- Publication number 20120208117
- Publication date Aug 16, 2012
- Hodogaya Chemical Co., Ltd.
- Shigetaka Numazawa
- C07 - ORGANIC CHEMISTRY
Information Patent Application
INDOLE DERIVATIVES
- Publication number 20120052427
- Publication date Mar 1, 2012
- Hodogaya Chemical Co., Ltd.
- Shigetaka Numazawa
- C07 - ORGANIC CHEMISTRY

Shigetaka Numazawa

Person

Patents Grantslast 30 patents

Compound including basic dye and amino acid, hair dyeing dye, and h...

Indenoindole derivative and organic electroluminescent element

Naphthotriazole derivatives and organic electroluminescence devices

Benzotriazole derivative and an organic electroluminescent device

Benzotriazole derivatives and organic electroluminescent devices us...

Diphenylnaphthylamine derivatives

Patents Applicationslast 30 patents

COMPOUND CONTAINING BASIC DYE AND AMINO ACID, HAIR DYING DYE, AND H...

A BENZOTRIAZOLE DERIVATIVE AND AN ORGANIC ELECTROLUMINESCENT DEVICE

INDENOINDOLE DERIVATIVE AND ORGANIC ELECTROLUMINESCENT ELEMENT

NOVEL NAPHTHOTRIAZOLE DERIVATIVES AND ORGANIC ELECTROLUMINESCENCE D...

NOVEL BENZOTRIAZOLE DERIVATIVES AND ORGANIC ELECTROLUMINESCENT DEVI...

TRIPHENYLAMINE DERIVATIVES

DIPHENYLNAPHTHYLAMINE DERIVATIVES

INDOLE DERIVATIVES