Dynamic microphone unit and dynamic microphone

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8644544
APP PUB NO 20130058514A1
SERIAL NO

13599434

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A dynamic microphone unit includes a diaphragm vibrating in response to received sound waves; a voice coil fixed to the diaphragm; a magnetic circuit generating magnetism in a magnetic gap where the voice coil is disposed; and an acoustic resistor disposed in a space adjacent to the reverse of the diaphragm. The acoustic resistor includes a cover disposed between a felt and the diaphragm. A case having an open end and a closed end accommodates the felt and the cover. The cover has holes transmitting sound waves at the closed end and a bending portion at the open end which urges the cover and the felt.

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Patent Owner(s)

Patent OwnerAddress
KABUSHIKI KAISHA AUDIO-TECHNICA2-46-1 NISHI-NARUSE MACHIDA-SHI TOKYO 194-8666

International Classification(s)

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  • 2012 Application Filing Year
  • H04R Class
  • 1738 Applications Filed
  • 1523 Patents Issued To-Date
  • 87.63 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances2012201320142015201620172018201920202021202220230255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Akino, Hiroshi Kanagawa, JP 275 1766

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Aug 4, 2025