GB1297028A - - Google Patents

Info

Publication number
GB1297028A
GB1297028A GB1297028DA GB1297028A GB 1297028 A GB1297028 A GB 1297028A GB 1297028D A GB1297028D A GB 1297028DA GB 1297028 A GB1297028 A GB 1297028A
Authority
GB
United Kingdom
Prior art keywords
electret
solvent
oxide film
oxide
oxide layer
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
Other languages
English (en)
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
Priority claimed from AU54467/69A external-priority patent/AU436364B2/en
Priority claimed from AU54470/69A external-priority patent/AU411997B2/en
Priority claimed from AU54468/69A external-priority patent/AU5446869A/en
Application filed filed Critical
Publication of GB1297028A publication Critical patent/GB1297028A/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
    • H04R19/00—Electrostatic transducers
    • H04R19/005—Electrostatic transducers using semiconductor materials

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
GB1297028D 1969-05-05 1970-02-13 Expired GB1297028A (enrdf_load_stackoverflow)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AU54467/69A AU436364B2 (en) 1969-05-05 1969-05-05 Inorganic electret
AU54470/69A AU411997B2 (en) 1969-05-05 Electret transducer
AU54468/69A AU5446869A (en) 1969-05-05 1969-05-05 Capacitor transducer

Publications (1)

Publication Number Publication Date
GB1297028A true GB1297028A (enrdf_load_stackoverflow) 1972-11-22

Family

ID=27154927

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297028D Expired GB1297028A (enrdf_load_stackoverflow) 1969-05-05 1970-02-13

Country Status (1)

Country Link
GB (1) GB1297028A (enrdf_load_stackoverflow)

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Legal Events

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