NL6805919A - - Google Patents

Info

Publication number
NL6805919A
NL6805919A NL6805919A NL6805919A NL6805919A NL 6805919 A NL6805919 A NL 6805919A NL 6805919 A NL6805919 A NL 6805919A NL 6805919 A NL6805919 A NL 6805919A NL 6805919 A NL6805919 A NL 6805919A
Authority
NL
Netherlands
Application number
NL6805919A
Other versions
NL167542B (nl
NL167542C (nl
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 filed Critical
Publication of NL6805919A publication Critical patent/NL6805919A/xx
Publication of NL167542B publication Critical patent/NL167542B/xx
Application granted granted Critical
Publication of NL167542C publication Critical patent/NL167542C/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
NL6805919A 1967-05-15 1968-04-25 Werkwijze voor de vervaardiging van een electreet en aldus vervaardigde electreet. NL167542C (nl)

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 true NL6805919A (pl) 1968-11-18
NL167542B NL167542B (nl) 1981-07-16
NL167542C NL167542C (nl) 1981-12-16

Family

ID=24560137

Family Applications (1)

Application Number Title Priority Date Filing Date
NL6805919A NL167542C (nl) 1967-05-15 1968-04-25 Werkwijze voor de vervaardiging van een electreet en aldus vervaardigde electreet.

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2059727A1 (pl) * 1969-08-28 1971-06-04 Pioneer Electronic Corp

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5121334B2 (pl) * 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 (de) * 1973-06-26 1975-07-10 Akg Akustische Kino Geraete Kondensatormikrophon
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 (ja) * 2012-07-25 2015-04-01 株式会社ビスキャス 振動発電体およびこれを用いた発電方法
RU181900U1 (ru) * 2018-04-16 2018-07-26 Федеральное государственное бюджетное образовательное учреждение высшего образования "Волгоградский государственный технический университет" (ВолгГТУ) Устройство для изготовления электретов
KR102337495B1 (ko) 2019-12-20 2021-12-09 삼성에스디아이 주식회사 부하 제어회로 감지시스템

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2059727A1 (pl) * 1969-08-28 1971-06-04 Pioneer Electronic Corp

Also Published As

Publication number Publication date
DE1639444A1 (de) 1971-04-22
NL167542B (nl) 1981-07-16
GB1230404A (pl) 1971-05-05
JPS5025160B1 (pl) 1975-08-21
NL167542C (nl) 1981-12-16
DE1639444B2 (de) 1972-08-03
GB1230402A (pl) 1971-05-05
GB1230403A (pl) 1971-05-05

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Legal Events

Date Code Title Description
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