The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 02, 2012
Filed:
Mar. 17, 2010
Aart Z. Van Halteren, Hobrede, NL;
Roelof A. Marissen, The Hague, NL;
Michel Bosman, Delft, NL;
Dion I. DE Roo, Voorburg, NL;
Raymond Mögelin, Alkmaar, NL;
Michel DE Nooij, Aalsmeer, NL;
Aart Z. van Halteren, Hobrede, NL;
Roelof A. Marissen, The Hague, NL;
Michel Bosman, Delft, NL;
Dion I. de Roo, Voorburg, NL;
Raymond Mögelin, Alkmaar, NL;
Michel de Nooij, Aalsmeer, NL;
Sonion Nederland B.V., Amsterdam, NL;
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.