DE2333418C2 - Elektretfolie - Google Patents

Elektretfolie

Info

Publication number
DE2333418C2
DE2333418C2 DE19732333418 DE2333418A DE2333418C2 DE 2333418 C2 DE2333418 C2 DE 2333418C2 DE 19732333418 DE19732333418 DE 19732333418 DE 2333418 A DE2333418 A DE 2333418A DE 2333418 C2 DE2333418 C2 DE 2333418C2
Authority
DE
Germany
Prior art keywords
layer
electret
film
film according
properties
Prior art date
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.)
Expired
Application number
DE19732333418
Other languages
German (de)
English (en)
Other versions
DE2333418A1 (de
Inventor
Wilhelmus Hermanus Eindhoven Iding
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of DE2333418A1 publication Critical patent/DE2333418A1/de
Application granted granted Critical
Publication of DE2333418C2 publication Critical patent/DE2333418C2/de
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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Laminated Bodies (AREA)
DE19732333418 1972-07-21 1973-06-30 Elektretfolie Expired DE2333418C2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7210088A NL7210088A (enrdf_load_stackoverflow) 1972-07-21 1972-07-21

Publications (2)

Publication Number Publication Date
DE2333418A1 DE2333418A1 (de) 1974-01-31
DE2333418C2 true DE2333418C2 (de) 1985-01-10

Family

ID=19816577

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19732333418 Expired DE2333418C2 (de) 1972-07-21 1973-06-30 Elektretfolie

Country Status (8)

Country Link
JP (2) JPS4946426A (enrdf_load_stackoverflow)
AT (1) AT326197B (enrdf_load_stackoverflow)
DE (1) DE2333418C2 (enrdf_load_stackoverflow)
FR (1) FR2194028B1 (enrdf_load_stackoverflow)
GB (1) GB1394347A (enrdf_load_stackoverflow)
IN (1) IN139061B (enrdf_load_stackoverflow)
IT (1) IT991799B (enrdf_load_stackoverflow)
NL (1) NL7210088A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013942A1 (de) * 2008-03-12 2009-09-17 Nanogate Ag Beschichtete Kunststofffolie

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL179104C (nl) * 1974-03-15 1986-07-01 Philips Nv Elektrostatische transducent.
JPS5112125A (ja) * 1974-07-19 1976-01-30 Matsushita Electric Ind Co Ltd Erekutoretsutodenkionkyohenkanki
SE7410408L (sv) * 1974-08-15 1976-01-19 Ericsson Telefon Ab L M Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.
JPS5430300B1 (enrdf_load_stackoverflow) * 1975-01-21 1979-09-29
JPS5814317B2 (ja) * 1976-04-20 1983-03-18 松下電器産業株式会社 電気感応記録紙
CA1150816A (en) * 1979-07-06 1983-07-26 Ronald Else Method and apparatus for implanting a charge in an electret foil
FI20070155A0 (fi) * 2007-02-23 2007-02-23 Panphonics Oy Elektreettilevyrakenne

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1789091B2 (de) * 1967-05-15 1974-04-04 Thermo Electron Corp., Waltham, Mass. (V.St.A.) Elektret sowie Verfahren und Vorrichtung zu seiner Herstellung. Ausscheidung aus: 1639444
NL143362B (nl) * 1968-07-10 1974-09-16 Tno Werkwijze voor het formeren van een eenzijdig gemetalliseerde elektreetfoelie, alsmede zulk een elektreetfoelie geformeerd volgens deze werkwijze.
GB1302590A (enrdf_load_stackoverflow) * 1969-09-10 1973-01-10
JPS4857614A (enrdf_load_stackoverflow) * 1971-11-17 1973-08-13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008013942A1 (de) * 2008-03-12 2009-09-17 Nanogate Ag Beschichtete Kunststofffolie

Also Published As

Publication number Publication date
ATA633673A (de) 1975-02-15
AT326197B (de) 1975-11-25
GB1394347A (en) 1975-05-14
IN139061B (enrdf_load_stackoverflow) 1976-05-01
DE2333418A1 (de) 1974-01-31
FR2194028A1 (enrdf_load_stackoverflow) 1974-02-22
JPS4946426A (enrdf_load_stackoverflow) 1974-05-04
NL7210088A (enrdf_load_stackoverflow) 1974-01-23
IT991799B (it) 1975-08-30
JPS55133699U (enrdf_load_stackoverflow) 1980-09-22
FR2194028B1 (enrdf_load_stackoverflow) 1977-02-18

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Legal Events

Date Code Title Description
OD Request for examination
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee