FR2371758B1 - - Google Patents

Info

Publication number
FR2371758B1
FR2371758B1 FR7734918A FR7734918A FR2371758B1 FR 2371758 B1 FR2371758 B1 FR 2371758B1 FR 7734918 A FR7734918 A FR 7734918A FR 7734918 A FR7734918 A FR 7734918A FR 2371758 B1 FR2371758 B1 FR 2371758B1
Authority
FR
France
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
FR7734918A
Other languages
French (fr)
Other versions
FR2371758A1 (fr
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.)
Uniroyal Ltd Great Britain
Original Assignee
Uniroyal Ltd Great Britain
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 Uniroyal Ltd Great Britain filed Critical Uniroyal Ltd Great Britain
Publication of FR2371758A1 publication Critical patent/FR2371758A1/fr
Application granted granted Critical
Publication of FR2371758B1 publication Critical patent/FR2371758B1/fr
Granted legal-status Critical Current

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR7734918A 1976-11-22 1977-11-21 Electrets de polymeres du type styrene Granted FR2371758A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA266,292A CA1068445A (en) 1976-11-22 1976-11-22 Stable electrets of styrene-type polymers

Publications (2)

Publication Number Publication Date
FR2371758A1 FR2371758A1 (fr) 1978-06-16
FR2371758B1 true FR2371758B1 (OSRAM) 1980-10-17

Family

ID=4107339

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7734918A Granted FR2371758A1 (fr) 1976-11-22 1977-11-21 Electrets de polymeres du type styrene

Country Status (5)

Country Link
JP (1) JPS5364800A (OSRAM)
CA (1) CA1068445A (OSRAM)
DE (1) DE2752110A1 (OSRAM)
FR (1) FR2371758A1 (OSRAM)
GB (1) GB1589528A (OSRAM)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1107950A (en) * 1978-08-10 1981-09-01 Anupama Mishra Electret made of branched alpha-olefin polymer
EP0090062B1 (de) * 1982-03-29 1987-02-04 Rhodia Ag Verfahren und Vorrichtung zur Herstellung von Elektret-Filamenten, -Spinnfasern oder dergleichen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5526611B2 (OSRAM) * 1973-05-09 1980-07-15

Also Published As

Publication number Publication date
GB1589528A (en) 1981-05-13
DE2752110A1 (de) 1978-05-24
FR2371758A1 (fr) 1978-06-16
CA1068445A (en) 1979-12-18
JPS5524256B2 (OSRAM) 1980-06-27
JPS5364800A (en) 1978-06-09

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Legal Events

Date Code Title Description
ST Notification of lapse