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Class Information
Number: 381/396
Name: Electrical audio signal processing systems and devices > Electro-acoustic audio transducer > Electromagnetic (e.g., dyynamic)
Description: Subject matter wherein an information varied electrical signal produces a similarly varying magnetic field which causes motion in a sound radiating device to produce a corresponding acoustical wave.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7609148 |
Actuator, touch panel display device, electronic apparatus |
Oct. 27, 2009 |
| 7606386 |
Vibration actuator |
Oct. 20, 2009 |
| 7599510 |
Multifunctional actuator and mobile terminal |
Oct. 6, 2009 |
| 7595944 |
Optical actuator |
Sep. 29, 2009 |
| 7583812 |
Electro-acoustic converter and electronic device using the same |
Sep. 1, 2009 |
| 7574013 |
Speaker |
Aug. 11, 2009 |
| 7570779 |
Speaker |
Aug. 4, 2009 |
| 7567680 |
Dual-diaphragm speaker assemblies with acoustic passageways and mobile terminals including the same |
Jul. 28, 2009 |
| 7559130 |
Method for fabricating quartz-based nanoresonators |
Jul. 14, 2009 |
| 7561705 |
Reduction of flux leakage in a dynamic microphone |
Jul. 14, 2009 |
| 7555824 |
Method for large scale integration of quartz-based devices |
Jul. 7, 2009 |
| 7557471 |
Acoustic wave generating apparatus and method |
Jul. 7, 2009 |
| 7545948 |
Loudspeaker |
Jun. 9, 2009 |
| 7532737 |
Loudspeakers, systems, and components thereof |
May. 12, 2009 |
| 7529380 |
Multifunction-type vibration actuator and mobile terminal device |
May. 5, 2009 |
| 7515727 |
Speaker device and method of manufacturing the speaker device |
Apr. 7, 2009 |
| 7508953 |
Loudspeaker and components for use in construction thereof |
Mar. 24, 2009 |
| 7502486 |
Plane speaker having coil plate guide device |
Mar. 10, 2009 |
| 7454031 |
Multifunction speaker |
Nov. 18, 2008 |
| 7450733 |
Speaker with externally mounted acoustic extension |
Nov. 11, 2008 |
| 7447328 |
Loudspeaker |
Nov. 4, 2008 |
| 7443995 |
Acoustic loudspeaker |
Oct. 28, 2008 |
| 7436088 |
Electromagnetic exciter |
Oct. 14, 2008 |
| 7421088 |
Multifunction transducer |
Sep. 2, 2008 |
| 7412763 |
Method of making an acoustic assembly for a transducer |
Aug. 19, 2008 |
| 7409071 |
Large-diameter arcuate speaker |
Aug. 5, 2008 |
| 7402922 |
Acoustic wave generating apparatus and method |
Jul. 22, 2008 |
| 7403631 |
Electro-acoustic transducer |
Jul. 22, 2008 |
| 7386137 |
Sound transducer for solid surfaces |
Jun. 10, 2008 |
| 7372968 |
Loudspeaker driver |
May. 13, 2008 |
| 7369674 |
Acoustic apparatus |
May. 6, 2008 |
| 7366317 |
Apparatus for creating motion amplification in a transducer with improved linkage structure |
Apr. 29, 2008 |
| 7353585 |
Method of poling ferroelectric materials |
Apr. 8, 2008 |
| 7346182 |
Electroacoustic transducer and method for manufacturing the same |
Mar. 18, 2008 |
| 7346183 |
Spider with lead wires sandwiched |
Mar. 18, 2008 |
| 7324658 |
Speaker |
Jan. 29, 2008 |
| 7324655 |
Electroacoustic transducer |
Jan. 29, 2008 |
| 7319772 |
Speaker device for improving mid/high-range frequencies |
Jan. 15, 2008 |
| 7316289 |
Electro-acoustic transducer and method of manufacturing transducer |
Jan. 8, 2008 |
| 7316290 |
Acoustic lens system |
Jan. 8, 2008 |
| 7302077 |
Electromagnetic driver for a planar diaphragm loudspeaker |
Nov. 27, 2007 |
| 7292707 |
Loudspeaker |
Nov. 6, 2007 |
| 7289642 |
Audio speaker |
Oct. 30, 2007 |
| 7272237 |
Audio speaker having a removable voice coil |
Sep. 18, 2007 |
| 7260229 |
Position sensor for a loudspeaker |
Aug. 21, 2007 |
| 7245738 |
Electroacoustic transducer with small dimensions |
Jul. 17, 2007 |
| 7237315 |
Method for fabricating a resonator |
Jul. 3, 2007 |
| 7236607 |
Loudspeaker with a first and a second diaphragm body |
Jun. 26, 2007 |
| 7233680 |
Speaker device |
Jun. 19, 2007 |
| 7231057 |
Multi-function actuator capable of preventing vibration |
Jun. 12, 2007 |
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