Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electrostrictive – magnetostrictive – or piezoelectric
Reexamination Certificate
2007-08-27
2009-06-30
Le, Huyen D (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Electrostrictive, magnetostrictive, or piezoelectric
C381S152000, C381S186000
Reexamination Certificate
active
07555133
ABSTRACT:
An electro-acoustic transducer includes a first electro-acoustic transduction unit. The first electro-acoustic transduction unit includes an acoustic radiation plate which radiates a sound wave, a bending vibration plate including a vibrator, and a first coupling member which couples an edge portion of the acoustic radiation plate with an edge portion of the bending vibration plate together.
REFERENCES:
patent: 6865277 (2005-03-01), Bank et al.
patent: 7180225 (2007-02-01), Sashida et al.
patent: 7247976 (2007-07-01), Sashida et al.
patent: 62-176399 (1987-08-01), None
patent: 5-219588 (1993-08-01), None
Le Huyen D
McGinn IP Law Group PLLC
NEC Corporation
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