BE658516A - - Google Patents
Info
- Publication number
- BE658516A BE658516A BE658516DA BE658516A BE 658516 A BE658516 A BE 658516A BE 658516D A BE658516D A BE 658516DA BE 658516 A BE658516 A BE 658516A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US33910164A | 1964-01-21 | 1964-01-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE658516A true BE658516A (de) | 1965-05-17 |
Family
ID=23327507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE658516D BE658516A (de) | 1964-01-21 | 1965-01-19 |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT270022B (de) |
| BE (1) | BE658516A (de) |
| CH (1) | CH464357A (de) |
| ES (1) | ES308344A1 (de) |
| FR (1) | FR1465376A (de) |
| GB (1) | GB1046142A (de) |
| LU (1) | LU47820A1 (de) |
| NL (1) | NL6500604A (de) |
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 (de) | 2009-10-15 | 2010-03-18 | Bolst, Klaus, Dr.-Ing. | Filtersystem bestehend aus einem Elektretfilter und einer vorgeschalteten Ionisationseinheit zur Erhöhung der Leistung des Elektretfilters und Verlängerung der Standzeit dessen bezüglich seiner elektrischen und elektrostatischen Eigenschaften |
-
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/de unknown
- 1965-01-19 FR FR2422A patent/FR1465376A/fr not_active Expired
- 1965-01-20 GB GB257065A patent/GB1046142A/en not_active Expired
- 1965-01-20 ES ES0308344A patent/ES308344A1/es not_active Expired
- 1965-01-20 AT AT42865A patent/AT270022B/de active
- 1965-01-21 LU LU47820A patent/LU47820A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES308344A1 (es) | 1965-05-01 |
| GB1046142A (en) | 1966-10-19 |
| CH464357A (de) | 1968-10-31 |
| LU47820A1 (de) | 1965-03-22 |
| AT270022B (de) | 1969-04-10 |
| NL6500604A (de) | 1965-07-22 |
| FR1465376A (fr) | 1967-01-13 |