IN139061B - - Google Patents
Info
- Publication number
- IN139061B IN139061B IN1269/CAL/1973A IN1269CA1973A IN139061B IN 139061 B IN139061 B IN 139061B IN 1269CA1973 A IN1269CA1973 A IN 1269CA1973A IN 139061 B IN139061 B IN 139061B
- Authority
- IN
- India
Links
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7210088A NL7210088A (xx) | 1972-07-21 | 1972-07-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| IN139061B true IN139061B (xx) | 1976-05-01 |
Family
ID=19816577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IN1269/CAL/1973A IN139061B (xx) | 1972-07-21 | 1973-05-30 |
Country Status (8)
| Country | Link |
|---|---|
| JP (2) | JPS4946426A (xx) |
| AT (1) | AT326197B (xx) |
| DE (1) | DE2333418C2 (xx) |
| FR (1) | FR2194028B1 (xx) |
| GB (1) | GB1394347A (xx) |
| IN (1) | IN139061B (xx) |
| IT (1) | IT991799B (xx) |
| NL (1) | NL7210088A (xx) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL179104C (nl) * | 1974-03-15 | 1986-07-01 | Philips Nv | Elektrostatische transducent. |
| JPS5112125A (ja) * | 1974-07-19 | 1976-01-30 | Matsushita Electric Ind Co Ltd | Erekutoretsutodenkionkyohenkanki |
| SE7410408L (sv) * | 1974-08-15 | 1976-01-19 | Ericsson Telefon Ab L M | Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap. |
| JPS5430300B1 (xx) * | 1975-01-21 | 1979-09-29 | ||
| 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 |
| CA1150816A (en) * | 1979-07-06 | 1983-07-26 | Ronald Else | Method and apparatus for implanting a charge in an electret foil |
| FI20070155A0 (fi) * | 2007-02-23 | 2007-02-23 | Panphonics Oy | Elektreettilevyrakenne |
| DE102008013942A1 (de) * | 2008-03-12 | 2009-09-17 | Nanogate Ag | Beschichtete Kunststofffolie |
Family Cites Families (4)
| 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 (xx) * | 1969-09-10 | 1973-01-10 | ||
| JPS4857614A (xx) * | 1971-11-17 | 1973-08-13 |
-
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 FR FR7326310A patent/FR2194028B1/fr not_active Expired
- 1973-07-18 IT IT6915873A patent/IT991799B/it active
- 1973-07-18 GB GB3417073A patent/GB1394347A/en not_active Expired
- 1973-07-18 JP JP8041273A patent/JPS4946426A/ja active Pending
- 1973-07-18 AT AT633673A patent/AT326197B/de not_active IP Right Cessation
-
1980
- 1980-03-03 JP JP2759380U patent/JPS55133699U/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| IT991799B (it) | 1975-08-30 |
| AT326197B (de) | 1975-11-25 |
| FR2194028A1 (xx) | 1974-02-22 |
| ATA633673A (de) | 1975-02-15 |
| DE2333418A1 (de) | 1974-01-31 |
| DE2333418C2 (de) | 1985-01-10 |
| FR2194028B1 (xx) | 1977-02-18 |
| JPS55133699U (xx) | 1980-09-22 |
| NL7210088A (xx) | 1974-01-23 |
| JPS4946426A (xx) | 1974-05-04 |
| GB1394347A (en) | 1975-05-14 |