JPS4946426A - - Google Patents

Info

Publication number: JPS4946426A
Authority: JP; Japan
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.): Pending

Application number

JP8041273A

Other languages

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.)

1972-07-21

Filing date

1973-07-18

Publication date

1974-05-04

1973-07-18 Application filed filed Critical

1974-05-04 Publication of JPS4946426A publication Critical patent/JPS4946426A/ja

Status Pending legal-status Critical Current

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
- H04R19/01—Electrostatic transducers characterised by the use of electrets
- 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)
Physics & Mathematics (AREA)
Power Engineering (AREA)
Spectroscopy & Molecular Physics (AREA)
Microelectronics & Electronic Packaging (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Laminated Bodies (AREA)

JP8041273A 1972-07-21 1973-07-18 Pending JPS4946426A (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL7210088A NL7210088A (it)	1972-07-21	1972-07-21

Publications (1)

Publication Number	Publication Date
JPS4946426A true JPS4946426A (it)	1974-05-04

Family

ID=19816577

Family Applications (2)

Application Number	Title	Priority Date	Filing Date
JP8041273A Pending JPS4946426A (it)	1972-07-21	1973-07-18
JP2759380U Pending JPS55133699U (it)	1972-07-21	1980-03-03

Family Applications After (1)

Application Number	Title	Priority Date	Filing Date
JP2759380U Pending JPS55133699U (it)	1972-07-21	1980-03-03

Country Status (8)

Country	Link
JP (2)	JPS4946426A (it)
AT (1)	AT326197B (it)
DE (1)	DE2333418C2 (it)
FR (1)	FR2194028B1 (it)
GB (1)	GB1394347A (it)
IN (1)	IN139061B (it)
IT (1)	IT991799B (it)
NL (1)	NL7210088A (it)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5112125A (ja) *	1974-07-19	1976-01-30	Matsushita Electric Ind Co Ltd	Erekutoretsutodenkionkyohenkanki
JPS52128139A (en) *	1976-04-20	1977-10-27	Matsushita Electric Ind Co Ltd	Electricity induction recording paper
JPS5430300B1 (it) *	1975-01-21	1979-09-29
JP2010519839A (ja) *	2007-02-23	2010-06-03	パンフォニクスオーワイ	音響アクチュエータプレート構造

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL179104C (nl) *	1974-03-15	1986-07-01	Philips Nv	Elektrostatische transducent.
SE382297B (sv) *	1974-08-15	1976-01-19	Ericsson Telefon Ab L M	Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.
CA1150816A (en) *	1979-07-06	1983-07-26	Ronald Else	Method and apparatus for implanting a charge in an electret foil
DE102008013942A1 (de) *	2008-03-12	2009-09-17	Nanogate Ag	Beschichtete Kunststofffolie

Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS4857614A (it) *	1971-11-17	1973-08-13

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1789091B2 (de) *	1967-05-15	1974-04-04	Thermo Electron Corp., Waltham, Mass. (V.St.A.)	Elektret sowie Verfahren und Vorrichtung zu seiner Herstellung. Ausscheidung aus: 1639444
NL143362B (nl) *	1968-07-10	1974-09-16	Tno	Werkwijze voor het formeren van een eenzijdig gemetalliseerde elektreetfoelie, alsmede zulk een elektreetfoelie geformeerd volgens deze werkwijze.
GB1302590A (it) *	1969-09-10	1973-01-10

1972
- 1972-07-21 NL NL7210088A patent/NL7210088A/xx unknown
1973
- 1973-05-30 IN IN1269/CAL/1973A patent/IN139061B/en unknown
- 1973-06-30 DE DE19732333418 patent/DE2333418C2/de not_active Expired
- 1973-07-18 AT AT633673A patent/AT326197B/de not_active IP Right Cessation
- 1973-07-18 GB GB3417073A patent/GB1394347A/en not_active Expired
- 1973-07-18 JP JP8041273A patent/JPS4946426A/ja active Pending
- 1973-07-18 FR FR7326310A patent/FR2194028B1/fr not_active Expired
- 1973-07-18 IT IT6915873A patent/IT991799B/it active
1980
- 1980-03-03 JP JP2759380U patent/JPS55133699U/ja active Pending

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS4857614A (it) *	1971-11-17	1973-08-13

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5112125A (ja) *	1974-07-19	1976-01-30	Matsushita Electric Ind Co Ltd	Erekutoretsutodenkionkyohenkanki
JPS5430300B1 (it) *	1975-01-21	1979-09-29
JPS52128139A (en) *	1976-04-20	1977-10-27	Matsushita Electric Ind Co Ltd	Electricity induction recording paper
JPS5814317B2 (ja) *	1976-04-20	1983-03-18	松下電器産業株式会社	電気感応記録紙
JP2010519839A (ja) *	2007-02-23	2010-06-03	パンフォニクスオーワイ	音響アクチュエータプレート構造

Also Published As

Publication number	Publication date
ATA633673A (de)	1975-02-15
NL7210088A (it)	1974-01-23
FR2194028B1 (it)	1977-02-18
GB1394347A (en)	1975-05-14
DE2333418A1 (de)	1974-01-31
IN139061B (it)	1976-05-01
IT991799B (it)	1975-08-30
DE2333418C2 (de)	1985-01-10
AT326197B (de)	1975-11-25
FR2194028A1 (it)	1974-02-22
JPS55133699U (it)	1980-09-22

Publication	Publication Date	Title
FR2194028B1 (it)	1977-02-18
JPS48101018A (it)	1973-12-20
JPS5527055B2 (it)	1980-07-17
FR2184332A5 (it)	1973-12-21
JPS5420061B2 (it)	1979-07-19
JPS4947700A (it)	1974-05-08
JPS4996463U (it)	1974-08-20
JPS5350462Y2 (it)	1978-12-02
JPS5147122Y2 (it)	1976-11-13
JPS4918580Y1 (it)	1974-05-17
JPS48100718A (it)	1973-12-19
JPS4988071U (it)	1974-07-31
JPS4887327A (it)	1973-11-16
JPS4944109U (it)	1974-04-18
JPS4933542U (it)	1974-03-25
JPS4924548A (it)	1974-03-05
CH605981A5 (it)	1978-10-13
CH588432A5 (it)	1977-05-31
CH561938A5 (it)	1975-05-15
CH605731A5 (it)	1978-10-13
CH563538A5 (it)	1975-06-30
CH561463A5 (it)	1975-04-30
CH602860A5 (it)	1978-08-15
CH561444A (it)	1975-04-30
CH561277A5 (it)	1975-04-30