FR1465376A - electret and method of manufacturing this element - Google Patents

electret and method of manufacturing this element

Info

Publication number
FR1465376A
FR1465376A FR2422A FR2422A FR1465376A FR 1465376 A FR1465376 A FR 1465376A FR 2422 A FR2422 A FR 2422A FR 2422 A FR2422 A FR 2422A FR 1465376 A FR1465376 A FR 1465376A
Authority
FR
France
Prior art keywords
electret
manufacturing
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
FR2422A
Other languages
French (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.)
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
Application granted granted Critical
Publication of FR1465376A publication Critical patent/FR1465376A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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)
  • Measurement Of Radiation (AREA)
  • Organic Insulating Materials (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
FR2422A 1964-01-21 1965-01-19 electret and method of manufacturing this element Expired FR1465376A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33910164A 1964-01-21 1964-01-21

Publications (1)

Publication Number Publication Date
FR1465376A true FR1465376A (en) 1967-01-13

Family

ID=23327507

Family Applications (1)

Application Number Title Priority Date Filing Date
FR2422A Expired FR1465376A (en) 1964-01-21 1965-01-19 electret and method of manufacturing this element

Country Status (8)

Country Link
AT (1) AT270022B (en)
BE (1) BE658516A (en)
CH (1) CH464357A (en)
ES (1) ES308344A1 (en)
FR (1) FR1465376A (en)
GB (1) GB1046142A (en)
LU (1) LU47820A1 (en)
NL (1) NL6500604A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2201548B (en) * 1987-02-25 1991-07-31 Harold Wilson Meredith Pook Electret elements
DE202009014001U1 (en) 2009-10-15 2010-03-18 Bolst, Klaus, Dr.-Ing. Filter system consisting of an electret filter and an upstream ionization unit to increase the performance of the electret filter and extend the service life of it in terms of its electrical and electrostatic properties

Also Published As

Publication number Publication date
ES308344A1 (en) 1965-05-01
GB1046142A (en) 1966-10-19
CH464357A (en) 1968-10-31
LU47820A1 (en) 1965-03-22
BE658516A (en) 1965-05-17
AT270022B (en) 1969-04-10
NL6500604A (en) 1965-07-22

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