GB1135413A - An electret and method of making the same - Google Patents

An electret and method of making the same

Info

Publication number
GB1135413A
GB1135413A GB4676766A GB4676766A GB1135413A GB 1135413 A GB1135413 A GB 1135413A GB 4676766 A GB4676766 A GB 4676766A GB 4676766 A GB4676766 A GB 4676766A GB 1135413 A GB1135413 A GB 1135413A
Authority
GB
United Kingdom
Prior art keywords
electret
temperature
field
zone
polyethylene terephthalate
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
GB4676766A
Other languages
English (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.)
Philip Morris USA Inc
Original Assignee
Philip Morris USA Inc
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 Philip Morris USA Inc filed Critical Philip Morris USA Inc
Publication of GB1135413A publication Critical patent/GB1135413A/en
Expired 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)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Artificial Filaments (AREA)
  • Filtering Materials (AREA)
GB4676766A 1965-10-23 1966-10-19 An electret and method of making the same Expired GB1135413A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US50398365A 1965-10-23 1965-10-23

Publications (1)

Publication Number Publication Date
GB1135413A true GB1135413A (en) 1968-12-04

Family

ID=24004358

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4676766A Expired GB1135413A (en) 1965-10-23 1966-10-19 An electret and method of making the same

Country Status (7)

Country Link
AT (1) AT291404B (https=)
BE (1) BE688615A (https=)
CH (1) CH498479A (https=)
ES (1) ES332637A2 (https=)
GB (1) GB1135413A (https=)
LU (1) LU52224A1 (https=)
NL (1) NL6614505A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467474A1 (fr) * 1979-10-11 1981-04-17 Tno Procede de fabrication d'electrets

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5946112B2 (ja) * 1975-12-29 1984-11-10 三菱油化株式会社 アツデンザイリヨウ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467474A1 (fr) * 1979-10-11 1981-04-17 Tno Procede de fabrication d'electrets

Also Published As

Publication number Publication date
NL6614505A (https=) 1967-04-24
CH498479A (de) 1970-10-31
ES332637A2 (es) 1967-12-01
BE688615A (https=) 1967-03-31
AT291404B (de) 1971-06-15
LU52224A1 (https=) 1966-12-21

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