NL167542C - METHOD FOR MANUFACTURING AN ELECTRET AND SO ELECTRET MANUFACTURED - Google Patents

METHOD FOR MANUFACTURING AN ELECTRET AND SO ELECTRET MANUFACTURED

Info

Publication number
NL167542C
NL167542C NL6805919A NL6805919A NL167542C NL 167542 C NL167542 C NL 167542C NL 6805919 A NL6805919 A NL 6805919A NL 6805919 A NL6805919 A NL 6805919A NL 167542 C NL167542 C NL 167542C
Authority
NL
Netherlands
Prior art keywords
electret
manufacturing
manufactured
electret manufactured
Prior art date
Application number
NL6805919A
Other languages
Dutch (nl)
Other versions
NL6805919A (en
NL167542B (en
Original Assignee
Thermo Electron Corp
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 Thermo Electron Corp filed Critical Thermo Electron Corp
Publication of NL6805919A publication Critical patent/NL6805919A/xx
Publication of NL167542B publication Critical patent/NL167542B/en
Application granted granted Critical
Publication of NL167542C publication Critical patent/NL167542C/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
    • 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
NL6805919A 1967-05-15 1968-04-25 METHOD FOR MANUFACTURING AN ELECTRET AND SO ELECTRET MANUFACTURED NL167542C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US63846367A 1967-05-15 1967-05-15

Publications (3)

Publication Number Publication Date
NL6805919A NL6805919A (en) 1968-11-18
NL167542B NL167542B (en) 1981-07-16
NL167542C true NL167542C (en) 1981-12-16

Family

ID=24560137

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6805919A NL167542C (en) 1967-05-15 1968-04-25 METHOD FOR MANUFACTURING AN ELECTRET AND SO ELECTRET MANUFACTURED

Country Status (4)

Country Link
JP (1) JPS5025160B1 (en)
DE (1) DE1639444B2 (en)
GB (3) GB1230403A (en)
NL (1) NL167542C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4815868B1 (en) * 1969-08-28 1973-05-17
JPS5121334B2 (en) * 1971-08-27 1976-07-01
CA989514A (en) * 1972-09-08 1976-05-18 Loh-Yi Chang Electromechanical transducer and method of making same
AT323257B (en) * 1973-06-26 1975-07-10 Akg Akustische Kino Geraete CONDENSER MICROPHONE
JPS5130997A (en) * 1974-09-11 1976-03-16 Kureha Chemical Ind Co Ltd Kobunshifuirumu no renzokuseikyokuhoho
US4085297A (en) * 1977-06-13 1978-04-18 Polaroid Corporation Spring force biasing means for electroacoustical transducer components
JPS57188105A (en) * 1981-05-14 1982-11-19 Toshiba Corp Electret constituent
JP5691085B2 (en) * 2012-07-25 2015-04-01 株式会社ビスキャス Vibration generator and power generation method using the same
RU181900U1 (en) * 2018-04-16 2018-07-26 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) DEVICE FOR PRODUCING ELECTRETHES
KR102337495B1 (en) 2019-12-20 2021-12-09 삼성에스디아이 주식회사 Detecting system for control circuit of load

Also Published As

Publication number Publication date
GB1230404A (en) 1971-05-05
GB1230403A (en) 1971-05-05
NL6805919A (en) 1968-11-18
NL167542B (en) 1981-07-16
DE1639444B2 (en) 1972-08-03
GB1230402A (en) 1971-05-05
DE1639444A1 (en) 1971-04-22
JPS5025160B1 (en) 1975-08-21

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Legal Events

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TNT Modifications of names of proprietors of patents or applicants of examined patent applications

Owner name: KNOWLES ELECTRONICS COMPANY

V4 Lapsed because of reaching the maxim lifetime of a patent