CH464357A - Method of making an electret - Google Patents

Method of making an electret

Info

Publication number
CH464357A
CH464357A CH70765A CH70765A CH464357A CH 464357 A CH464357 A CH 464357A CH 70765 A CH70765 A CH 70765A CH 70765 A CH70765 A CH 70765A CH 464357 A CH464357 A CH 464357A
Authority
CH
Switzerland
Prior art keywords
electret
making
Prior art date
Application number
CH70765A
Other languages
German (de)
Inventor
D Grandine Lester
M Baxt Lawrence
Original Assignee
Philip Morris 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 Inc filed Critical Philip Morris Inc
Publication of CH464357A publication Critical patent/CH464357A/en

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)
  • Measurement Of Radiation (AREA)
  • Organic Insulating Materials (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
CH70765A 1964-01-21 1965-01-19 Method of making an electret CH464357A (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
CH464357A true CH464357A (en) 1968-10-31

Family

ID=23327507

Family Applications (1)

Application Number Title Priority Date Filing Date
CH70765A CH464357A (en) 1964-01-21 1965-01-19 Method of making an electret

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 (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2060994B (en) 1979-10-12 1984-01-25 Marconi Co Ltd Piezoelectric/pyroelectric elements
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
LU47820A1 (en) 1965-03-22
GB1046142A (en) 1966-10-19
ES308344A1 (en) 1965-05-01
BE658516A (en) 1965-05-17
FR1465376A (en) 1967-01-13
NL6500604A (en) 1965-07-22
AT270022B (en) 1969-04-10

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