Keigo NAITO

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Organic electroluminescent device
- Patent number 11,594,700
- Issue date Feb 28, 2023
- Hodogaya Chemical Co., Ltd.
- Kazuyuki Suruga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Organic electroluminescent device
- Patent number 10,950,797
- Issue date Mar 16, 2021
- Hodogaya Chemical Co., Ltd.
- Shuichi Hayashi
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
ORGANIC ELECTROLUMINESCENT DEVICE
- Publication number 20190273216
- Publication date Sep 5, 2019
- Hodogaya Chemical Co., Ltd.
- Kazuyuki Suruga
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COMPOUND HAVING BENZAZOLE RING STRUCTURE AND ORGANIC ELECTROLUMINES...
- Publication number 20190252621
- Publication date Aug 15, 2019
- Hodogaya Chemical Co., Ltd.
- Naoaki Kabasawa
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Application
ORGANIC ELECTROLUMINESCENT DEVICE
- Publication number 20180294416
- Publication date Oct 11, 2018
- Hodogaya Chemical Co., Ltd.
- Shuichi HAYASHI
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ORGANIC ELECTROLUMINESCENT DEVICE
- Publication number 20180114916
- Publication date Apr 26, 2018
- Hodogaya Chemical Co., Ltd.
- Shuichi Hayashi
- C07 - ORGANIC CHEMISTRY
Information Patent Application
BENZOFUROINDOLE DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE
- Publication number 20160351823
- Publication date Dec 1, 2016
- Hodogaya Chemical Co., Ltd.
- Makoto NAGAOKA
- C07 - ORGANIC CHEMISTRY