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Ikumi Ichihashi
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Kitakyushu-shi, JP
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last 30 patents
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Patent Grant
Organic electroluminescent device
Patent number
8,847,367
Issue date
Sep 30, 2014
Nippon Steel & Sumikin Chemical Co., Ltd.
Takayuki Fukumatsu
C07 - ORGANIC CHEMISTRY
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Patent Grant
Organic electroluminescent device comprising a first electron-trans...
Patent number
8,758,904
Issue date
Jun 24, 2014
Nippon Steel & Sumikin Chemical Co., Ltd.
Takayuki Fukumatsu
C07 - ORGANIC CHEMISTRY
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last 30 patents
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Patent Application
ORGANIC ELECTROLUMINESCENT DEVICE
Publication number
20110101319
Publication date
May 5, 2011
NIPPON STEEL CHEMICAL CO., LTD.
Takayuki Fukumatsu
C07 - ORGANIC CHEMISTRY