FR1465376A - electret and method of manufacturing this element - Google Patents
electret and method of manufacturing this elementInfo
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title 1
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)
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)
| 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 |
-
1965
- 1965-01-18 NL NL6500604A patent/NL6500604A/xx unknown
- 1965-01-19 BE BE658516D patent/BE658516A/xx unknown
- 1965-01-19 CH CH70765A patent/CH464357A/en unknown
- 1965-01-19 FR FR2422A patent/FR1465376A/en not_active Expired
- 1965-01-20 ES ES0308344A patent/ES308344A1/en not_active Expired
- 1965-01-20 GB GB257065A patent/GB1046142A/en not_active Expired
- 1965-01-20 AT AT42865A patent/AT270022B/en active
- 1965-01-21 LU LU47820A patent/LU47820A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AT270022B (en) | 1969-04-10 |
| BE658516A (en) | 1965-05-17 |
| ES308344A1 (en) | 1965-05-01 |
| CH464357A (en) | 1968-10-31 |
| GB1046142A (en) | 1966-10-19 |
| LU47820A1 (en) | 1965-03-22 |
| NL6500604A (en) | 1965-07-22 |
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