Speaker diaphragm and headphone

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11979724
SERIAL NO

17339209

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A speaker diaphragm includes a mixed layer. The mixed layer includes cellulose nanofibers, and polyparaphenylenebenzobisoxazole fibers. An average length of the polyparaphenylenebenzobisoxazole fibers is 0.5 mm or more and 4.0 mm or less.

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Patent Owner(s)

  • YAMAHA CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nakashima, Hiroshi Hamamatsu, JP 145 2009
Sano, Tsunenori Hamamatsu, JP 8 27

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