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Keijiro Umehara
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Kyoto, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Analog circuit automatic calibration system
Patent number
7,254,507
Issue date
Aug 7, 2007
Matsushita Electric Industrial Co., Ltd.
Shiro Dosho
G01 - MEASURING TESTING
Information
Patent Grant
Low-pass filter for a PLL, phase-locked loop and semiconductor inte...
Patent number
7,030,688
Issue date
Apr 18, 2006
Matsushita Electric Industrial Co., Ltd.
Shiro Dosho
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Grant
Duty cycle correction circuit
Patent number
6,982,581
Issue date
Jan 3, 2006
Matsushita Electric Industrial Co., Ltd.
Shiro Dosho
H03 - BASIC ELECTRONIC CIRCUITRY
Patents Applications
last 30 patents
Information
Patent Application
Low-pass filter for a pll, phase-locked loop and semiconductor inte...
Publication number
20050077955
Publication date
Apr 14, 2005
Shiro Dosho
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Duty cycle correction circuit
Publication number
20040108878
Publication date
Jun 10, 2004
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Shiro Dosho
H03 - BASIC ELECTRONIC CIRCUITRY
Information
Patent Application
Liquid crystal driver device and liquid crystal driver unit
Publication number
20020175890
Publication date
Nov 28, 2002
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
Shiro Dosho
G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS