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Ryohei Kakuta
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Fukushima-ken, JP
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Patents Grants
last 30 patents
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Patent Grant
Liquid crystal display device with light quantity control portion
Patent number
6,313,891
Issue date
Nov 6, 2001
Alps Electric Co., Ltd.
Hideaki Nagakubo
G02 - OPTICS
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Patent Grant
Liquid crystal display apparatus
Patent number
6,297,786
Issue date
Oct 2, 2001
Alps Electric Co., Ltd.
Ryohei Kakuta
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
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Patent Grant
Liquid crystal display device
Patent number
6,219,117
Issue date
Apr 17, 2001
Alps Electric Co., Ltd.
Hideaki Nagakubo
G02 - OPTICS
Patents Applications
last 30 patents
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Patent Application
DRIVING VOLTAGE GENERATOR OF LIQUID CRYSTAL DISPLAY UNIT
Publication number
20010013864
Publication date
Aug 16, 2001
RYOHEI KAKUTA
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS