USB557274I5 - - Google Patents
Info
- Publication number
- USB557274I5 USB557274I5 US55727475A USB557274I5 US B557274 I5 USB557274 I5 US B557274I5 US 55727475 A US55727475 A US 55727475A US B557274 I5 USB557274 I5 US B557274I5
- Authority
- US
- United States
- 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.)
- Pending
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 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 (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7403471 | 1974-03-15 | ||
| NLAANVRAGE7403471,A NL179104C (nl) | 1974-03-15 | 1974-03-15 | Elektrostatische transducent. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| USB557274I5 true USB557274I5 (nl) | 1976-03-23 |
| US4016375A US4016375A (en) | 1977-04-05 |
Family
ID=19820964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/557,274 Expired - Lifetime US4016375A (en) | 1974-03-15 | 1975-03-11 | Electret transducer |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4016375A (nl) |
| JP (1) | JPS5951199B2 (nl) |
| AT (1) | AT332464B (nl) |
| DE (1) | DE2510279C2 (nl) |
| FR (1) | FR2289089A1 (nl) |
| GB (1) | GB1504314A (nl) |
| NL (1) | NL179104C (nl) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6726994B1 (en) * | 1998-11-18 | 2004-04-27 | Daikin Industries, Ltd. | Structural member of fluorine-containing polymer having adhesive property at high temperature and sliding material produced by using same |
| US8559660B2 (en) * | 2007-07-12 | 2013-10-15 | Industrial Technology Research Institute | Electrostatic electroacoustic transducers |
| BRPI0819048C8 (pt) * | 2007-12-06 | 2018-08-07 | 3M Innovative Properties Co | "meio filtrante de eletreto e método de preparo de uma manta de eletreto" |
| BRPI0909959B1 (pt) * | 2008-06-02 | 2018-11-13 | 3M Innovative Properties Co | manta de eletreto e meio de filtro à base de eletreto |
| WO2009148747A2 (en) * | 2008-06-02 | 2009-12-10 | 3M Innovative Properties Company | Charge-enhancing additives for electrets |
| US7765698B2 (en) * | 2008-06-02 | 2010-08-03 | 3M Innovative Properties Company | Method of making electret articles based on zeta potential |
| JP2011528610A (ja) * | 2008-06-30 | 2011-11-24 | スリーエム イノベイティブ プロパティズ カンパニー | 多孔性基材フィールド内の金属ナノクラスターのその場での形成方法 |
| US20110290119A1 (en) | 2009-02-20 | 2011-12-01 | 3M Innovative Properties Company | Antimicrobial electret web |
| TWI708473B (zh) * | 2019-09-27 | 2020-10-21 | 華碩電腦股份有限公司 | 致動器 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3711941A (en) * | 1970-11-02 | 1973-01-23 | Bell Telephone Labor Inc | Fabrication of electret transducer elements using low energy electron beam |
| US3770711A (en) * | 1972-01-31 | 1973-11-06 | Du Pont | Oriented structures of tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymer |
| NL7210088A (nl) * | 1972-07-21 | 1974-01-23 |
-
1974
- 1974-03-15 NL NLAANVRAGE7403471,A patent/NL179104C/nl not_active IP Right Cessation
-
1975
- 1975-03-08 DE DE2510279A patent/DE2510279C2/de not_active Expired
- 1975-03-11 US US05/557,274 patent/US4016375A/en not_active Expired - Lifetime
- 1975-03-12 GB GB10306/75A patent/GB1504314A/en not_active Expired
- 1975-03-12 AT AT189775A patent/AT332464B/de not_active IP Right Cessation
- 1975-03-12 JP JP50029180A patent/JPS5951199B2/ja not_active Expired
- 1975-03-14 FR FR7508035A patent/FR2289089A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2510279C2 (de) | 1982-04-15 |
| JPS5951199B2 (ja) | 1984-12-12 |
| DE2510279A1 (de) | 1975-09-18 |
| FR2289089B3 (nl) | 1977-11-18 |
| JPS50128520A (nl) | 1975-10-09 |
| AT332464B (de) | 1976-09-27 |
| NL179104C (nl) | 1986-07-01 |
| NL179104B (nl) | 1986-02-03 |
| ATA189775A (de) | 1976-01-15 |
| NL7403471A (nl) | 1975-09-17 |
| GB1504314A (en) | 1978-03-15 |
| US4016375A (en) | 1977-04-05 |
| FR2289089A1 (fr) | 1976-05-21 |