|
US4035672A
(en)
*
|
1975-02-06 |
1977-07-12 |
Cts Corporation |
Acoustic transducer with a dual purpose piezoelectric element
|
|
JPS5437135U
(nl)
*
|
1977-08-18 |
1979-03-10 |
|
|
|
GB2018548B
(en)
*
|
1978-04-07 |
1982-06-16 |
Matsushita Electric Ind Co Ltd |
Piezoelectric speaker
|
|
JPS5825677Y2
(ja)
*
|
1978-04-07 |
1983-06-02 |
松下電器産業株式会社 |
圧電形スピ−カ
|
|
DE2831377A1
(de)
*
|
1978-07-17 |
1980-01-31 |
Siemens Ag |
Elektroakustischer wandler
|
|
DE2831362A1
(de)
*
|
1978-07-17 |
1980-01-31 |
Siemens Ag |
Elektroakustischer wandler
|
|
JPS5911237B2
(ja)
*
|
1979-08-16 |
1984-03-14 |
株式会社精工舎 |
圧電スピ−カ
|
|
DE3005708C2
(de)
*
|
1980-02-15 |
1984-08-30 |
Siemens AG, 1000 Berlin und 8000 München |
Wandlerplatte für piezoelektrische Wandler
|
|
EP0057193A1
(en)
*
|
1980-08-11 |
1982-08-11 |
Motorola, Inc. |
Apparatus and method for enhancing the frequency response of a loudspeaker
|
|
JPS6025956B2
(ja)
*
|
1980-12-10 |
1985-06-21 |
松下電器産業株式会社 |
超音波送受波器
|
|
JPS5851697A
(ja)
*
|
1981-09-22 |
1983-03-26 |
Matsushita Electric Ind Co Ltd |
超音波送受波器
|
|
US4607186A
(en)
*
|
1981-11-17 |
1986-08-19 |
Matsushita Electric Industrial Co. Ltd. |
Ultrasonic transducer with a piezoelectric element
|
|
US4458170A
(en)
*
|
1981-12-08 |
1984-07-03 |
Matsushita Electric Industrial Co., Ltd. |
Ultrasonic transmitter-receiver
|
|
US4418248A
(en)
*
|
1981-12-11 |
1983-11-29 |
Koss Corporation |
Dual element headphone
|
|
US4414436A
(en)
*
|
1982-04-19 |
1983-11-08 |
Pioneer Speaker Components, Inc. |
Narrow-frequency band acoustic transducer
|
|
US4461930A
(en)
*
|
1982-09-23 |
1984-07-24 |
Pioneer Speaker Components, Inc. |
Acoustic transducer with honeycomb diaphragm
|
|
DE3306801A1
(de)
*
|
1983-02-26 |
1984-09-06 |
Rainer J. 5000 Köln Haas |
Kugelfoermiger hochtonlautsprecher mit piezoelektrischern antrieb
|
|
FR2574610A1
(fr)
*
|
1984-09-05 |
1986-06-13 |
Sawafuji Dynameca Co Ltd |
Elements piezoelectriques vibrants et transducteurs piezoelectriques electroacoustiques utilisant de tels elements
|
|
FR2574609A1
(fr)
*
|
1984-09-05 |
1986-06-13 |
Sawafuji Dynameca Co Ltd |
Elements piezoelectriques vibrants et transducteurs piezoelectriques electroacoustiques utilisant de tels elements
|
|
GB2166022A
(en)
*
|
1984-09-05 |
1986-04-23 |
Sawafuji Dynameca Co Ltd |
Piezoelectric vibrator
|
|
US5193119A
(en)
*
|
1985-09-02 |
1993-03-09 |
Franco Tontini |
Multiple loudspeaker
|
|
JPH0749914Y2
(ja)
*
|
1986-01-29 |
1995-11-13 |
株式会社村田製作所 |
超音波トランスデユ−サ
|
|
DE4120681A1
(de)
*
|
1990-08-04 |
1992-02-06 |
Bosch Gmbh Robert |
Ultraschallwandler
|
|
US5652801A
(en)
*
|
1994-05-02 |
1997-07-29 |
Aura Systems, Inc. |
Resonance damper for piezoelectric transducer
|
|
US5828768A
(en)
*
|
1994-05-11 |
1998-10-27 |
Noise Cancellation Technologies, Inc. |
Multimedia personal computer with active noise reduction and piezo speakers
|
|
US5638456A
(en)
*
|
1994-07-06 |
1997-06-10 |
Noise Cancellation Technologies, Inc. |
Piezo speaker and installation method for laptop personal computer and other multimedia applications
|
|
US5444324A
(en)
*
|
1994-07-25 |
1995-08-22 |
Western Atlas International, Inc. |
Mechanically amplified piezoelectric acoustic transducer
|
|
FR2734685B1
(fr)
*
|
1995-05-23 |
1997-08-14 |
Silec Liaisons Elec |
Haut-parleur piezoelectrique
|
|
US5901231A
(en)
|
1995-09-25 |
1999-05-04 |
Noise Cancellation Technologies, Inc. |
Piezo speaker for improved passenger cabin audio systems
|
|
JPH10294995A
(ja)
*
|
1997-04-21 |
1998-11-04 |
Matsushita Electric Ind Co Ltd |
防滴型超音波送信器
|
|
US6181797B1
(en)
|
1999-01-09 |
2001-01-30 |
Noise Cancellation Technologies, Inc. |
Piezo speaker for improved passenger cabin audio systems
|
|
GB2404779B
(en)
*
|
2003-08-07 |
2005-08-03 |
Sonic Age Ltd |
Electro-acoustic device for creating patterns of particulate matter
|
|
US8354773B2
(en)
*
|
2003-08-22 |
2013-01-15 |
Siemens Medical Solutions Usa, Inc. |
Composite acoustic absorber for ultrasound transducer backing material
|
|
JP4696487B2
(ja)
*
|
2004-07-15 |
2011-06-08 |
リコープリンティングシステムズ株式会社 |
記録ヘッド及びこれを備えたインクジェット記録装置
|
|
US7415121B2
(en)
*
|
2004-10-29 |
2008-08-19 |
Sonion Nederland B.V. |
Microphone with internal damping
|
|
JP5136644B2
(ja)
*
|
2008-07-14 |
2013-02-06 |
株式会社村田製作所 |
圧電発電装置
|
|
DE112009003590B4
(de)
*
|
2008-12-04 |
2018-06-14 |
Murata Manufacturing Co., Ltd. |
Ultraschallwandler
|
|
KR20120068613A
(ko)
*
|
2010-12-17 |
2012-06-27 |
삼성전기주식회사 |
압전 액추에이터
|
|
WO2014024551A1
(ja)
*
|
2012-08-10 |
2014-02-13 |
京セラ株式会社 |
音響発生器、音響発生装置および電子機器
|
|
US9880671B2
(en)
*
|
2013-10-08 |
2018-01-30 |
Sentons Inc. |
Damping vibrational wave reflections
|
|
WO2016118874A1
(en)
*
|
2015-01-23 |
2016-07-28 |
Knowles Electronics, Llc |
Piezoelectric speaker driver
|
|
KR101756673B1
(ko)
*
|
2016-06-07 |
2017-07-25 |
주식회사 이엠텍 |
다공성 물질을 구비하는 마이크로스피커 인클로져
|
|
KR101788111B1
(ko)
*
|
2016-06-09 |
2017-10-20 |
주식회사 이엠텍 |
다공성 물질을 구비하는 마이크로스피커 인클로져
|