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Keizo Miyamoto
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Osaka, JP
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last 30 patents
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Patent Grant
Filter unit having two attenuation poles
Patent number
6,531,933
Issue date
Mar 11, 2003
Sanyo Electric Co., Ltd.
Keizo Miyamoto
H01 - BASIC ELECTRIC ELEMENTS
Patents Applications
last 30 patents
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Patent Application
Filter unit and duplexer comprising such filter units
Publication number
20020135438
Publication date
Sep 26, 2002
SANYO ELECTRIC CO., LTD.
Keizo Miyamoto
H01 - BASIC ELECTRIC ELEMENTS