Speaker unit and earphone

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12108202
SERIAL NO

17543103

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A speaker unit incorporated in a housing of an earphone includes: a frame having a cylindrical shape; a diaphragm emitting sound; and a board to which a wiring line of a coil provided to the diaphragm is connected. The frame has a space inside, and the diaphragm and the board are placed inside the frame with the space interposed between the diaphragm and the board.

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Patent Owner(s)

Patent OwnerAddress
PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD1-61 SHIROMI 2-CHOME CHUO-KU OSAKA-SHI OSAKA 540-6207

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Muramatsu, Koichi Osaka, JP 24 146
Obase, Satoshi Osaka, JP 3 7

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