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Class Information
Number: 381/369
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Microphone capsule only
Description: Subject matter for converting a sound wave into a corresponding time variation of an electrical signal, in which the claimed subject matter consists essentially of a diaphragm and motor means to convert sound-induced movement of the diaphragm into an electrical signal, and any minimal chassis or housing components necessary to hold the diaphragm and motor means together or in proper relative position.


Sub-classes under this class:

Class Number Class Name Patents
381/174 Capacitive 224
381/170 Compound 22
381/176 Conductive diaphragm (e.g., reed, ribbon) 26
381/177 Dynamic (e.g., magnetic) 22
381/172 Light modifying 44
381/171 Micromagnetic 6
381/173 Piezoelectric or ferroelectric 145
381/179 Resistive 4
381/175 Semiconductor junction microphone 38
381/178 Vibrating electrical contract 3


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
7620196 Capacitor microphone unit Nov. 17, 2009
7620197 Casing of condenser microphone Nov. 17, 2009
7599505 Condenser microphone Oct. 6, 2009
7590252 Heat-resistant electret condenser microphone Sep. 15, 2009
7580533 Particulate flow detection microphone Aug. 25, 2009
7580735 Condenser microphone Aug. 25, 2009
7561712 Microphone device Jul. 14, 2009
7558397 Condenser microphone Jul. 7, 2009
7531617 Continuous process for producing poly(trimethylene terephthalate) May. 12, 2009
7524921 Continuous manufacture of poly(trimethylene terephthalate) Apr. 28, 2009
7496208 Wind shield and microphone Feb. 24, 2009
7466835 Miniature microphone with balanced termination Dec. 16, 2008
7415122 Microphone shield system Aug. 19, 2008
7412763 Method of making an acoustic assembly for a transducer Aug. 19, 2008
7415121 Microphone with internal damping Aug. 19, 2008
7327851 Parallelepiped condenser microphone Feb. 5, 2008
7302073 Method of detecting and deterring microphone sabotage Nov. 27, 2007
7298859 Microphone with reduced noise Nov. 20, 2007
7286680 Cylindrical microphone having an electret assembly in the end cover Oct. 23, 2007
7286677 Directional microphone assembly Oct. 23, 2007
7245726 Noise canceling microphone system and method for designing the same Jul. 17, 2007
7239714 Microphone having a flexible printed circuit board for mounting components Jul. 3, 2007
7233679 Microphone system for a communication device Jun. 19, 2007
7190802 Microphone enclosure for reducing acoustical interference Mar. 13, 2007
7171012 Microphone Jan. 30, 2007
7166910 Miniature silicon condenser microphone Jan. 23, 2007
7136500 Electret condenser microphone Nov. 14, 2006
7107665 Method for manufacturing microphone assembly Sep. 19, 2006
7106876 Microphone for simultaneous noise sensing and speech pickup Sep. 12, 2006
7106869 Condenser microphone Sep. 12, 2006
7099484 Behind-the-ear hearing aid Aug. 29, 2006
7072479 Capacitor microphone Jul. 4, 2006
7065224 Microphone for a hearing aid or listening device with improved internal damping and foreign material protection Jun. 20, 2006
7062058 Cylindrical microphone having an electret assembly in the end cover Jun. 13, 2006
7050597 Directional capacitor microphone May. 23, 2006
7013017 Microphone capsule support Mar. 14, 2006
6999596 Capacitor sensor Feb. 14, 2006
6975736 Microphone Dec. 13, 2005
6961437 Capacitor microphone Nov. 1, 2005
6937735 Microphone for a listening device having a reduced humidity coefficient Aug. 30, 2005
6920225 Electret capacitor microphone Jul. 19, 2005
6904155 Electret capacitor microphone Jun. 7, 2005
6898294 Microphone set May. 24, 2005
6865280 Socket for a microphone connector Mar. 8, 2005
6798890 Directional microphone assembly Sep. 28, 2004
6748091 Capacitor microphone and portable telephone using the capacitor microphone Jun. 8, 2004
6704427 Acoustic transducer with improved acoustic damper Mar. 9, 2004
6681023 Radial pickup microphone enclosure Jan. 20, 2004
6654473 Condenser microphone Nov. 25, 2003
6643380 Shielded microphone module and preamplifier Nov. 4, 2003

1 2


 
 
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