ClassID:

232035

H04R19/04 - page 7 - CPC Classification

Classification description:

Electrostatic transducers Microphones

Recent Application in this class:
#1801
20080083958
2008-04-10

MICRO-ELECTROMECHANICAL SYSTEM PACKAGE

#1802
20080083957
2008-04-10

MICRO-ELECTROMECHANICAL SYSTEM PACKAGE

#1803
20080075309
2008-03-27

Structure and manufacturing method of inversed microphone module and microphone chip component

#1804
20080075306
2008-03-27

Calibrated microelectromechanical microphone

#1805
20080063233
2008-03-13

Condenser microphone

#1806
20080063232
2008-03-13

Silicon condenser microphone

#1807
20080056524
2008-03-06

Microphone package

#1808
20080044043
2008-02-21

CONDENSER MICROPHONE

#1809
20080037768
2008-02-14

Microphone module and method for fabricating the same

#1810
20080025532
2008-01-31

MICROPHONE CASE AND CONDENSER MICROPHONE

#1811
20080025531
2008-01-31

Microphone amplifier

#1812
20080006093
2008-01-10

Pressure sensor and manufacturing method therefor

#1813
20080002837
2008-01-03

Variable directional condenser microphone unit

#1814
20070297631
2007-12-27

Comb sense microphone

#1815
20070291964
2007-12-20

Miniature acoustic transducer

#1816
20070286438
2007-12-13

Condenser microphone

#1817
20070286437
2007-12-13

Surface mountable transducer system

#1818
20070284971
2007-12-13

ELECTRONIC DEVICE

#1819
20070272992
2007-11-29

Method for fabricating condenser microphone and condenser microphone

#1820
20070269059
2007-11-22

Microphone

#1821
20070245542
2007-10-25

Method for making condenser microphones

#1822
20070242847
2007-10-18

Capacitor microphone

#1823
20070242841
2007-10-18

Condenser microphone

#1824
20070242840
2007-10-18

Condenser Microphone

#1825
20070235502
2007-10-11

Condenser Microphone

#1826
20070235407
2007-10-11

Method of fabricating a diaphragm of a capacitive microphone device

#1827
20070230734
2007-10-04

Monitor Transducer System and Manufacturing Method Thereof

#1828
20070202627
2007-08-30

Silicon condenser microphone and manufacturing method

#1829
20070201715
2007-08-30

Silicon condenser microphone and manufacturing method

#1830
20070195983
2007-08-23

Combination wind screen and microphone shock mount

#1831
20070193358
2007-08-23

Capacity detection type sensor element

#1832
20070189556
2007-08-16

Condenser microphone and method of producing the same

#1833
20070154040
2007-07-05

Capacitive microphone and method for making the same

#1834
20070121982
2007-05-31

Electret assembly for a microphone having a backplate with improved charge stability

#1835
20070108541
2007-05-17

Integrated electronic microphone having a perforated rigid back plate membrane

#1836
20070087466
2007-04-19

Integrated microphone

#1837
20070066027
2007-03-22

Method of fabricating microphone device and thermal oxide layer and low-stress structural layer thereof

#1838
20070065968
2007-03-22

Fabrication of silicon microphone

#1839
20070064968
2007-03-22

Microphone with irregular diaphragm

#1840
20070058826
2007-03-15

Condenser microphone

#1841
20070058825
2007-03-15

Capacitor microphone

#1842
20070057602
2007-03-15

Condenser microphone and packaging method for the same

#1843
20070047746
2007-03-01

Multi-microphone system

#1844
20070041597
2007-02-22

Silicon based condenser microphone and packaging method for the same

#1845
20070041596
2007-02-22

Condenser microphone

#1846
20070025571
2007-02-01

Electret Condenser Microphone

#1847
20070025570
2007-02-01

Condenser microphone

#1848
20070019829
2007-01-25

Microphone array

#1849
20070018318
2007-01-25

Means of integrating a microphone in a standard integrated circuit process

#1850
20060291674
2006-12-28

Method of making silicon-based miniaturized microphones

#1851
20060291672
2006-12-28

Condenser microphone

#1852
20060285703
2006-12-21

Condenser microphone

#1853
20060284516
2006-12-21

Microphone and a method of manufacturing a microphone

#1854
20060262953
2006-11-23

Casing of condenser microphone

#1855
20060256984
2006-11-16

Dual base of an electret condenser microphone and electret condenser microphone using the same

#1856
20060256981
2006-11-16

Condenser microphone employing wide band stop filter and having improved resistance to electrostatic discharge

#1857
20060233400
2006-10-19

Sound detecting mechanism

#1858
20060233399
2006-10-19

Condenser microphone

#1859
20060222196
2006-10-05

Acoustic tube and directional microphone

#1860
20060188112
2006-08-24

Condenser microphone and method for manufacturing the same

#1861
20060177085
2006-08-10

Microphone with dust-proof section

#1862
20060162996
2006-07-27

EMI shielding for a microphone

#1863
20060159294
2006-07-20

Capacitor microphone

#1864
20060157841
2006-07-20

Miniature silicon condenser microphone

#1865
20060145570
2006-07-06

Sound detecting mechanism

#1866
20060141656
2006-06-29

Micromechanical sensors and methods of manufacturing same

#1867
20060131163
2006-06-22

Variable volume between flexible structure and support surface

#1868
20060116180
2006-06-01

Acoustic transducer module

#1869
20060115106
2006-06-01

Condenser microphone unit

#1870
20060115102
2006-06-01

Surface mountable transducer system

#1871
20060110000
2006-05-25

Condenser microphone

#1872
20060109990
2006-05-25

Capacitor microphone with acoustic resistor

#1873
20060098835
2006-05-11

Condenser microphone connection plug

#1874
20060093171
2006-05-04

Silicon microphone with softly constrained diaphragm

#1875
20060093170
2006-05-04

Backplateless silicon microphone

#1876
20060093168
2006-05-04

Condenser microphone and method for manufacturing substrate for the same

#1877
20060093167
2006-05-04

Microphone with internal damping

#1878
20060093166
2006-05-04

Shielding housing for a condenser microphone

#1879
20060088169
2006-04-27

Condenser microphone

#1880
20060084298
2006-04-20

Condenser microphone

#1881
20060083392
2006-04-20

Condenser microphone

#1882
20060078137
2006-04-13

Dynamic pressure sensing structure

#1883
20060045303
2006-03-02

Microphone connector

#1884
20060045293
2006-03-02

Capacitor microphone unit

#1885
20060013428
2006-01-19

Condenser microphone

#1886
20060013426
2006-01-19

Condenser microphone

#1887
20060008097
2006-01-12

Detection and control of diaphragm collapse in condenser microphones

#1888
20050261039
2005-11-24

Condenser microphone

#1889
20050254670
2005-11-17

Condenser microphone

#1890
20050213781
2005-09-29

Charge pump circuit

#1891
20050207605
2005-09-22

Microphone and method of producing a microphone

#1892
20050207596
2005-09-22

Packaged digital microphone device with auxiliary line-in function

#1893
20050190944
2005-09-01

Unidirectional condenser microphone unit

#1894
20050185811
2005-08-25

Parallelepiped condenser microphone

#1895
20050185807
2005-08-25

Condenser microphone

#1896
20050163336
2005-07-28

Capacitor sensor

#1897
20050157902
2005-07-21

Microphone

#1898
20050152571
2005-07-14

Condenser microphone and method for making the same

#1899
20050135648
2005-06-23

Mechanical acoustic filter by erosion etching

#1900
20050135640
2005-06-23

Capacitor microphone

#1901
20050123155
2005-06-09

SMD type biased condenser microphone

#1902
20050069164
2005-03-31

Microphone system for a communication device

#1903
20050063557
2005-03-24

Directional capacitor microphone

#1904
20050053254
2005-03-10

Condenser microphone using space efficiently and having no characteristic variations

#1905
20050040833
2005-02-24

Electrostatic capacitance detection circuit and microphone device

#1906
20050031150
2005-02-10

Electret condenser microphone

#1907
20050018864
2005-01-27

Method of manufacturing a microphone

#1908
18345526
2026-02-03

Enhanced electrostatic discharge trap for microphones

#1909
17967869
2025-02-11

Nonlinear distortion compensation for capacitive MEMS microphones

#1910
17647209
2023-11-14

Acoustic devices with edge corrugation

#1911
17647208
2026-02-10

Acoustic devices with directional reinforcement

#1912
17221479
2023-10-17

MEMS assembly substrates including a bond layer

#1913
17197026
2022-07-05

Digital sensor assembly with selective dynamic element matching

#1914
17151437
2022-05-03

MEMS device with a diaphragm having a slotted layer

#1915
17133026
2022-06-14

Miniature folded transducer

#1916
17096499
2022-02-01

Sensor assembly and electrical circuit therefor

#1917
17091116
2022-02-22

Mems device with dynamic valve layer

#1918
16934015
2021-10-26

MEMS sound transducer

#1919
16888979
2020-10-20

Methods and systems for detecting barks

#1920
16863617
2022-02-22

Property control and configuration based on door knock detection

#1921
16821983
2020-12-15

Audio apparatus and audio method thereof

#1922
16599600
2020-12-22

Amplifier circuitry

#1923
16581864
2020-10-27

Device and method to control a speaker to emit a sound to protect a microphone

#1924
16514593
2023-10-24

Variable voltage phantom power supply assembly and a method for customizing performance characteristics of a microphone

#1925
16446646
2020-11-17

Package structure of micro-electro-mechanical-system microphone package and method for packaging the same

#1926
16426615
2022-02-01

Overload recovery optimization in microelectromechanical system application specific integrated circuit

#1927
16398301
2020-09-22

MEMS package, MEMS microphone, method of manufacturing the MEMS package and method of manufacturing the MEMS microphone

#1928
16380968
2019-11-19

Method and apparatus of an acoustic energy detection circuit for a pulse density modulation microphone

#1929
16363013
2020-06-23

Back chamber volume enlargement microphone package

#1930
16142602
2019-11-19

Photoelectric MEMS microphone and electronic device

#1931
16057904
2019-07-09

Microphone apparatus and method of adjusting directivity thereof

#1932
15953094
2019-03-26

MEMs devices

#1933
15943637
2019-08-20

Micro electro mechanical system (MEMS) microphone

#1934
15884704
2019-03-19

Spatial low-crosstalk headset

#1935
15873740
2019-01-01

Configurable bi-directional charge pump design

#1936
15865185
2018-12-11

Sports Hi-Fi touch-control Bluetooth earphone

#1937
15806008
2018-06-12

Large-capsule, side-address, switchable multi-pattern removable assembly for condenser microphone

#1938
15712659
2018-08-14

Sequential activity intelligent personal assistant

#1939
15645834
2018-04-03

MEMS microphone

#1940
15417189
2018-03-13

Microphone

#1941
15416101
2017-11-07

Microphone package

#1942
15408890
2017-05-09

Methods and apparatus for a delta sigma ADC with parallel-connected integrators

#1943
15363863
2017-11-07

Microelectromechanical systems microphone with electrostatic force feedback to measure sound pressure

#1944
15363798
2018-02-20

Biasing of electromechanical systems microphone with alternating-current voltage waveform

#1945
15214567
2019-06-18

Top port MEMS package and method

#1946
14928702
2017-04-04

System and method for a differential comb drive MEMS

#1947
14836499
2016-05-10

Top port multi-part surface mount silicon condenser microphone

#1948
14826188
2018-06-19

Adjusting resonant frequencies based on feedback networks

#1949
14505495
2016-02-23

Microelectro-mechanical systems (MEMS) microphone package device and MEMS packaging method thereof

#1950
14321525
2015-06-30

Methods of manufacture of top port surface mount MEMS microphones

#1951
14258870
2015-09-29

Top port surface mount MEMS microphone

#1952
14248035
2016-05-03

Use of microphone capacitance as a switched capacitor in an input network of a delta-sigma modulator

#1953
14247987
2017-02-14

Systems and methods for reducing non-linearities of a microphone signal

#1954
14182960
2015-09-15

Methods of manufacture of bottom port surface mount MEMS microphones

#1955
14159742
2015-08-04

Methods of manufacture of top port multi-part surface mount MEMS microphones

#1956
14155054
2015-10-06

Methods of manufacture of bottom port surface mount MEMS microphones

#1957
14155025
2015-04-14

Top port multi-part surface mount silicon condenser microphone

#1958
14154822
2015-09-22

Bottom port surface mount MEMS microphone

#1959
14149525
2015-06-09

Bottom port surface mount MEMS microphone

#1960
14149506
2015-09-22

Top port surface mount MEMS microphone

#1961
14149501
2015-05-05

Top port multi-part surface mount MEMS microphone

#1962
14149475
2015-05-26

Methods of manufacture of bottom port multi-part surface mount MEMS microphones

#1963
14149373
2015-10-13

Methods of manufacture of top port surface mount MEMS microphones

#1964
14149372
2015-05-05

Bottom port multi-part surface mount MEMS microphone

#1965
14144089
2015-06-23

Methods of manufacture of top port multi-part surface mount silicon condenser microphones

#1966
13224263
2019-09-03

Ribbon array microphone