GB2072948B - Method of manufacturing an electrode plate electret - Google Patents

Method of manufacturing an electrode plate electret

Info

Publication number
GB2072948B
GB2072948B GB8011055A GB8011055A GB2072948B GB 2072948 B GB2072948 B GB 2072948B GB 8011055 A GB8011055 A GB 8011055A GB 8011055 A GB8011055 A GB 8011055A GB 2072948 B GB2072948 B GB 2072948B
Authority
GB
United Kingdom
Prior art keywords
manufacturing
electrode plate
electret
plate electret
electrode
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
GB8011055A
Other versions
GB2072948A (en
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.)
Hosiden Electronics Co Ltd
Original Assignee
Hosiden Electronics 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 Hosiden Electronics Co Ltd filed Critical Hosiden Electronics Co Ltd
Priority to GB8011055A priority Critical patent/GB2072948B/en
Publication of GB2072948A publication Critical patent/GB2072948A/en
Application granted granted Critical
Publication of GB2072948B publication Critical patent/GB2072948B/en
Priority to SG64684A priority patent/SG64684G/en
Priority to HK93084A priority patent/HK93084A/en
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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension
    • 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
    • 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)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB8011055A 1980-04-02 1980-04-02 Method of manufacturing an electrode plate electret Expired GB2072948B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB8011055A GB2072948B (en) 1980-04-02 1980-04-02 Method of manufacturing an electrode plate electret
SG64684A SG64684G (en) 1980-04-02 1984-09-07 An electrode plate electret for an electroacoustic transducer and to a method of manufacturing an electrode plate electret
HK93084A HK93084A (en) 1980-04-02 1984-11-22 An electrode plate electret for an electro-acoustic transducer and to a method of manufacturing an electrode plate electret

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8011055A GB2072948B (en) 1980-04-02 1980-04-02 Method of manufacturing an electrode plate electret

Publications (2)

Publication Number Publication Date
GB2072948A GB2072948A (en) 1981-10-07
GB2072948B true GB2072948B (en) 1984-06-06

Family

ID=10512559

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8011055A Expired GB2072948B (en) 1980-04-02 1980-04-02 Method of manufacturing an electrode plate electret

Country Status (3)

Country Link
GB (1) GB2072948B (en)
HK (1) HK93084A (en)
SG (1) SG64684G (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136207B (en) * 1983-03-07 1987-06-17 Harold Wilson Meredith Pook Manufacture of electrets

Also Published As

Publication number Publication date
GB2072948A (en) 1981-10-07
SG64684G (en) 1985-03-15
HK93084A (en) 1984-11-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19960402