FR2070812A1 - - Google Patents

Info

Publication number
FR2070812A1
FR2070812A1 FR7044528A FR7044528A FR2070812A1 FR 2070812 A1 FR2070812 A1 FR 2070812A1 FR 7044528 A FR7044528 A FR 7044528A FR 7044528 A FR7044528 A FR 7044528A FR 2070812 A1 FR2070812 A1 FR 2070812A1
Authority
FR
France
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7044528A
Other languages
French (fr)
Other versions
FR2070812B1 (enExample
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of FR2070812A1 publication Critical patent/FR2070812A1/fr
Application granted granted Critical
Publication of FR2070812B1 publication Critical patent/FR2070812B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49005—Acoustic transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR707044528A 1969-12-11 1970-12-10 Expired FR2070812B1 (enExample)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44099939A JPS5220851B1 (enExample) 1969-12-11 1969-12-11

Publications (2)

Publication Number Publication Date
FR2070812A1 true FR2070812A1 (enExample) 1971-09-17
FR2070812B1 FR2070812B1 (enExample) 1974-02-15

Family

ID=14260671

Family Applications (1)

Application Number Title Priority Date Filing Date
FR707044528A Expired FR2070812B1 (enExample) 1969-12-11 1970-12-10

Country Status (5)

Country Link
US (1) US3858307A (enExample)
JP (1) JPS5220851B1 (enExample)
CA (1) CA944473A (enExample)
DE (1) DE2061210A1 (enExample)
FR (1) FR2070812B1 (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2330800C3 (de) * 1973-06-16 1981-10-01 Sennheiser Electronic Kg, 3002 Wedemark Elektroakustischer Wandler nach dem elektrostatischen Prinzip und Verfahren zu dessen Herstellung
US3945112A (en) * 1975-03-21 1976-03-23 Bell Telephone Laboratories, Incorporated Technique for fabrication of foil electret
JPS5918051B2 (ja) * 1976-02-29 1984-04-25 三菱油化株式会社 カテ−テル
US4062105A (en) * 1976-12-20 1977-12-13 The United States Of America As Represented By The Secretary Of The Navy Method for fabricating ferroelectric ultrasonic transducers
GB2079056B (en) * 1980-06-30 1985-04-17 Tokyo Shibaura Electric Co Electret device
FR2632737B1 (fr) * 1988-06-10 1992-12-24 Thomson Csf Procede d'obtention d'une structure generatrice d'effets electrooptiques non lineaires, structure obtenue et applications
DE4115221C2 (de) * 1991-05-10 1994-09-01 Sennheiser Electronic Elektroakustischer Wandler nach dem elektrostatischen Prinzip
US7280014B2 (en) * 2001-03-13 2007-10-09 Rochester Institute Of Technology Micro-electro-mechanical switch and a method of using and making thereof
WO2002097865A2 (en) * 2001-05-31 2002-12-05 Rochester Institute Of Technology Fluidic valves, agitators, and pumps and methods thereof
JP4697763B2 (ja) 2001-07-31 2011-06-08 パナソニック株式会社 コンデンサマイクロホン
US7211923B2 (en) 2001-10-26 2007-05-01 Nth Tech Corporation Rotational motion based, electrostatic power source and methods thereof
US7378775B2 (en) * 2001-10-26 2008-05-27 Nth Tech Corporation Motion based, electrostatic power source and methods thereof
US6688179B2 (en) 2001-10-26 2004-02-10 Nth Tech Corporation Electrostatic pressure transducer and a method thereof
US7287328B2 (en) * 2003-08-29 2007-10-30 Rochester Institute Of Technology Methods for distributed electrode injection
US7217582B2 (en) * 2003-08-29 2007-05-15 Rochester Institute Of Technology Method for non-damaging charge injection and a system thereof
US8581308B2 (en) * 2004-02-19 2013-11-12 Rochester Institute Of Technology High temperature embedded charge devices and methods thereof
US20070074731A1 (en) * 2005-10-05 2007-04-05 Nth Tech Corporation Bio-implantable energy harvester systems and methods thereof
JP4810661B2 (ja) * 2006-04-27 2011-11-09 国立大学法人埼玉大学 機械電気変換素子及びその製造方法
US7876661B2 (en) * 2007-10-02 2011-01-25 Seagate Technology Llc Non-destructive readback for ferroelectric material
US20170170674A1 (en) * 2015-12-09 2017-06-15 Nth Tech Corporation Methods for trapping electrons at an interface of insulators each having an arbitrary thickness and devices thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3705312A (en) * 1970-11-02 1972-12-05 Bell Telephone Labor Inc Preparation of electret transducer elements by application of controlled breakdown electric field

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
(REVUE AMERICAINE"ELECTRONICS"VOLUME 42,6 JANVIER 1969 ARTICLE:A SIMPLE BETTER MICROPHONE,PAGE 170) *
170) *
REVUE AMERICAINE"ELECTRONICS"VOLUME 42,6 JANVIER 1969 ARTICLE:A SIMPLE BETTER MICROPHONE,PAGE *

Also Published As

Publication number Publication date
DE2061210A1 (de) 1971-06-24
FR2070812B1 (enExample) 1974-02-15
JPS5220851B1 (enExample) 1977-06-07
US3858307A (en) 1975-01-07
CA944473A (en) 1974-03-26

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Legal Events

Date Code Title Description
ST Notification of lapse