GB1046142A - Electret and method for its manufacture - Google Patents
Electret and method for its manufactureInfo
- Publication number
- GB1046142A GB1046142A GB257065A GB257065A GB1046142A GB 1046142 A GB1046142 A GB 1046142A GB 257065 A GB257065 A GB 257065A GB 257065 A GB257065 A GB 257065A GB 1046142 A GB1046142 A GB 1046142A
- Authority
- GB
- United Kingdom
- Prior art keywords
- electret
- electrets
- jan
- polyethylene terephthalate
- electric field
- 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
- 238000000034 method Methods 0.000 title 1
- -1 Polyethylene terephthalate Polymers 0.000 abstract 2
- 239000005030 aluminium foil Substances 0.000 abstract 2
- 230000005684 electric field Effects 0.000 abstract 2
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 2
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 2
- 229910052788 barium Inorganic materials 0.000 abstract 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 abstract 1
- AOWKSNWVBZGMTJ-UHFFFAOYSA-N calcium titanate Chemical compound [Ca+2].[O-][Ti]([O-])=O AOWKSNWVBZGMTJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 235000012489 doughnuts Nutrition 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 229920002050 silicone resin Polymers 0.000 abstract 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 |
|---|---|
| GB1046142A true GB1046142A (en) | 1966-10-19 |
Family
ID=23327507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB257065A Expired GB1046142A (en) | 1964-01-21 | 1965-01-20 | Electret and method for its manufacture |
Country Status (8)
| Country | Link |
|---|---|
| AT (1) | AT270022B (enExample) |
| BE (1) | BE658516A (enExample) |
| CH (1) | CH464357A (enExample) |
| ES (1) | ES308344A1 (enExample) |
| FR (1) | FR1465376A (enExample) |
| GB (1) | GB1046142A (enExample) |
| LU (1) | LU47820A1 (enExample) |
| NL (1) | NL6500604A (enExample) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405402A (en) | 1979-10-12 | 1983-09-20 | The Marconi Company Limited | Piezoelectric/pyroelectric elements |
| GB2201548A (en) * | 1987-02-25 | 1988-09-01 | Harold Wilson Meredith Pook | Coated electret elements |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 FR FR2422A patent/FR1465376A/fr not_active Expired
- 1965-01-19 CH CH70765A patent/CH464357A/de unknown
- 1965-01-19 BE BE658516D patent/BE658516A/xx unknown
- 1965-01-20 ES ES0308344A patent/ES308344A1/es not_active Expired
- 1965-01-20 AT AT42865A patent/AT270022B/de active
- 1965-01-20 GB GB257065A patent/GB1046142A/en not_active Expired
- 1965-01-21 LU LU47820A patent/LU47820A1/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4405402A (en) | 1979-10-12 | 1983-09-20 | The Marconi Company Limited | Piezoelectric/pyroelectric elements |
| GB2201548A (en) * | 1987-02-25 | 1988-09-01 | Harold Wilson Meredith Pook | Coated electret elements |
| GB2201548B (en) * | 1987-02-25 | 1991-07-31 | Harold Wilson Meredith Pook | Electret elements |
Also Published As
| Publication number | Publication date |
|---|---|
| LU47820A1 (enExample) | 1965-03-22 |
| ES308344A1 (es) | 1965-05-01 |
| CH464357A (de) | 1968-10-31 |
| BE658516A (enExample) | 1965-05-17 |
| NL6500604A (enExample) | 1965-07-22 |
| AT270022B (de) | 1969-04-10 |
| FR1465376A (fr) | 1967-01-13 |
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