Antenna apparatus including inverted-F antenna having variable resonance frequency

United States of America Patent

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May 13, 2008
Grant Date
Mar 4, 2004
app pub date
Aug 13, 2003
filing date
Aug 30, 2002

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Expired

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Abstract

An inverted-F antenna has at least two antenna conductive elements coupled in series via at least one switch. An antenna apparatus includes control means for controlling the at least one switch.

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Patent Owner	Address
FUJITSU LIMITED	KAWASAKI

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H01Q:AERIALS

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Inventor Name	Address	# of filed Patents	Total Citations
Kondo, Youichi	Kawasaki, JP	5	180
Shiotsu, Shinichi	Kawasaki, JP	77	1201
Yamada, Isamu	Kawasaki, JP	73	1414

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Antenna apparatus including inverted-F antenna having variable resonance frequency

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10639490

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PATENT NO	7372406
APP PUB NO	20040041734A1
SERIAL NO	10639490
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
May 13, 2008	US,7372406,B2 US7372406B2	GRANTED PATENT AS SECOND PUBLICATION
March 04, 2004	US,20040041734,A1 US20040041734A1	FIRST PUBLISHED PATENT APPLICATION

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10639490

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