Voice coil and speaker

United States of America Patent

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Apr 17, 2012
Grant Date
Mar 5, 2009
app pub date
Aug 19, 2008
filing date
Aug 27, 2007

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Abstract

A voice coil includes a bobbin formed of a wooden sheet obtained by slicing natural wood to a predetermined thickness and a coil that surrounds an outer circumference of the bobbin.

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Patent Owner(s)

JVC KENWOOD CORPORATION

International Classification(s)

H04R:LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR ....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Iino, Junji	Yokohama, JP	6	28
Imamura, Satoshi	Yokohama, JP	40	164
Kamimura, Shinji	Yokohama, JP	15	52

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Voice coil and speaker

Number of patents in Portfolio can not be more than 2000

United States of America Patent

12222910

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PATENT NO	8160291
APP PUB NO	20090060253A1
SERIAL NO	12222910
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
April 17, 2012	US,8160291,B2 US8160291B2	GRANTED PATENT AS SECOND PUBLICATION
March 05, 2009	US,20090060253,A1 US20090060253A1	FIRST PUBLISHED PATENT APPLICATION

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