Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Microphone capsule only
Reexamination Certificate
2006-11-14
2006-11-14
Kuntz, Curtis (Department: 2614)
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Microphone capsule only
C381S190000, C381S191000
Reexamination Certificate
active
07136496
ABSTRACT:
The present invention relates to a microphone that includes a housing and a diaphragm and backplate located with the housing. The housing has a sound port for receiving the sound. The diaphragm undergoes movement relative to the backplate, which it opposes, in response to the incoming sound. The backplate has a charged layer with a first surface that is exposed to the diaphragm and a second surface opposite the first surface. The backplate further includes a conductor for transmitting a signal from the backplate to electronics in the housing. The conductor faces the second surface of the charged layer. To minimize the charge degradation created by contact with or infiltration of foreign materials, the first surface, the second surface, or both surfaces of the charged layer includes a protective layer thereon.
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Microtronic, Product News and drawing for “Cylindrical Microphone Series 8000,” 2 pages (Apr. 19, 2001).
Bosman Michel
de Nooij Michel
de Roo Dion I.
Marissen Roelof A.
Mögelin Raymond
Jenkens & Gilchrist
Kuntz Curtis
Nguyen Tuan Duc
Sonion Nederland B.V.
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