SE366608B - - Google Patents

Info

Publication number: SE366608B
Authority: SE; Sweden

Application number

SE13221/71A

Inventor

G Sessler

J West

Original Assignee

Western Electric Co

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.)

1970-11-02

Filing date

1971-10-19

Publication date

1974-04-29

1971-10-19 Application filed by Western Electric Co filed Critical Western Electric Co

1974-04-29 Publication of SE366608B publication Critical patent/SE366608B/xx

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
- H01G7/025—Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric
- H01G7/026—Electrets, i.e. having a permanently-polarised dielectric having an inorganic dielectric with ceramic dielectric
- 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
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49005—Acoustic transducer
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12431—Foil or filament smaller than 6 mils
- Y10T428/12438—Composite

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Chemical & Material Sciences (AREA)
Microelectronics & Electronic Packaging (AREA)
Ceramic Engineering (AREA)
Inorganic Chemistry (AREA)
Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Treatments Of Macromolecular Shaped Articles (AREA)

SE13221/71A 1970-11-02 1971-10-19 SE366608B (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US8588270A	1970-11-02	1970-11-02

Publications (1)

Publication Number	Publication Date
SE366608B true SE366608B (xx)	1974-04-29

Family

ID=22194584

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE13221/71A SE366608B (xx)	1970-11-02	1971-10-19

Country Status (10)

Country	Link
US (1)	US3705312A (xx)
JP (1)	JPS5541014B1 (xx)
AT (1)	AT323297B (xx)
BE (1)	BE774468A (xx)
DE (1)	DE2153784C3 (xx)
FR (1)	FR2113400A5 (xx)
GB (1)	GB1363717A (xx)
IT (1)	IT940095B (xx)
NL (1)	NL162778C (xx)
SE (1)	SE366608B (xx)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5220851B1 (xx) *	1969-12-11	1977-06-07
FR2144933A5 (xx) *	1971-07-02	1973-02-16	Anvar
US3809828A (en) *	1972-01-17	1974-05-07	Gte Laboratories Inc	Electret transducing device
US3786495A (en) *	1972-05-17	1974-01-15	Ncr	Stored charge transducer
US3868624A (en) *	1972-12-29	1975-02-25	Us Navy	Apparatus for mapping acoustic fields
GB2072458A (en) *	1980-03-03	1981-09-30	Tape Developments Ltd C	Electroacoustic transducers
GB2079056B (en) *	1980-06-30	1985-04-17	Tokyo Shibaura Electric Co	Electret device
US4382196A (en) *	1981-03-16	1983-05-03	Gte Products Corporation	Tape transducer
JPS57188105A (en) *	1981-05-14	1982-11-19	Toshiba Corp	Electret constituent
US4527218A (en) *	1981-06-08	1985-07-02	At&T Bell Laboratories	Stable positively charged Teflon electrets
US4512941A (en) *	1983-02-14	1985-04-23	At&T Bell Laboratories	Polarizing of piezoelectric material
US4808849A (en) *	1987-02-03	1989-02-28	Canadian Patents And Development Limited/Societe Canadienne Des Brevets Et D'exploitation Limitee	Phyllosilicate electrets and a method for their manufacture
WO1993001691A1 (en) *	1991-07-11	1993-01-21	Driver Michael L	Electrolytic loudspeaker assembly
US5388163A (en) *	1991-12-23	1995-02-07	At&T Corp.	Electret transducer array and fabrication technique
US5862239A (en) *	1997-04-03	1999-01-19	Lucent Technologies Inc.	Directional capacitor microphone system
US6833687B2 (en) *	2003-04-18	2004-12-21	Agilent Technologies, Inc.	Electromechanical power converter
US7525205B2 (en) *	2006-07-28	2009-04-28	Sanyo Electric Co., Ltd.	Electric power generator
KR101096546B1 (ko) *	2009-11-10	2011-12-22	주식회사 비에스이	정전형 스피커
TWM395976U (en) *	2010-06-30	2011-01-01	Tsung-Hung Wu	Electret electroacoustic transducer
DE102013217312B4 (de)	2013-08-30	2016-06-30	Robert Bosch Gmbh	Kapazitives MEMS-Bauelement mit einer druckempfindlichen Membran
DE102013221140A1 (de) *	2013-10-17	2015-04-23	Robert Bosch Gmbh	Elektretstruktur
US10958191B2 (en)	2018-02-15	2021-03-23	The Charles Stark Draper Laboratory, Inc.	Electrostatic motor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5225560A (en) *	1975-08-20	1977-02-25	Sharp Corp	Gate signal feeding method of gto thyristor

1970
- 1970-11-02 US US85882A patent/US3705312A/en not_active Expired - Lifetime
1971
- 1971-10-19 SE SE13221/71A patent/SE366608B/xx unknown
- 1971-10-22 NL NL7114561.A patent/NL162778C/xx not_active IP Right Cessation
- 1971-10-26 BE BE774468A patent/BE774468A/xx not_active IP Right Cessation
- 1971-10-26 GB GB4960571A patent/GB1363717A/en not_active Expired
- 1971-10-28 DE DE2153784A patent/DE2153784C3/de not_active Expired
- 1971-10-29 AT AT937471A patent/AT323297B/de not_active IP Right Cessation
- 1971-10-29 FR FR7138989A patent/FR2113400A5/fr not_active Expired
- 1971-10-29 IT IT70582/71A patent/IT940095B/it active
- 1971-11-02 JP JP8686571A patent/JPS5541014B1/ja active Pending

Also Published As

Publication number	Publication date
IT940095B (it)	1973-02-10
US3705312A (en)	1972-12-05
DE2153784A1 (de)	1972-05-25
DE2153784B2 (de)	1974-10-24
GB1363717A (en)	1974-08-14
NL162778C (nl)	1980-06-16
JPS5541014B1 (xx)	1980-10-21
FR2113400A5 (xx)	1972-06-23
BE774468A (fr)	1972-02-14
NL7114561A (xx)	1972-05-04
NL162778B (nl)	1980-01-15
DE2153784C3 (de)	1975-07-17
AT323297B (de)	1975-07-10

Publication	Publication Date	Title
AR204384A1 (xx)	1976-02-06
FR2113400A5 (xx)	1972-06-23
ATA96471A (xx)	1973-02-15
AU2044470A (xx)	1972-03-30
AU2130570A (xx)	1972-04-27
AU2085370A (xx)	1972-04-13
AU2017870A (xx)	1972-03-23
AU1581370A (xx)	1971-12-09
AU1841070A (xx)	1972-02-10
AU1086670A (xx)	1971-08-05
AU1969370A (xx)	1972-03-16
AU1918570A (xx)	1972-03-02
AU1974970A (xx)	1972-03-16
AU2131570A (xx)	1972-04-27
AU1879170A (xx)	1972-02-17
ATA672271A (xx)	1973-12-15
AU2061170A (xx)	1972-04-13
AU1872870A (xx)	1972-02-17
AU1943370A (xx)	1972-03-09
AU2112570A (xx)	1972-04-20
AU2115870A (xx)	1972-04-20
AU1083170A (xx)	1971-08-05
AU2119370A (xx)	1972-04-20
AU1881070A (xx)	1972-02-17
AU1064870A (xx)	1971-07-29