|
Match
|
Document |
Document Title |
|
|
7610670 |
Method for manufacturing a diaphragm assembly
A diaphragm assembly used for a condenser microphone has a diaphragm made of a resin film including a metallized film on one surface of a supporter ring. The diaphragm is made by a first step of...
|
|
|
7287328 |
Methods for distributed electrode injection
Methods for injecting charge include providing a target comprising a first layer on a second layer, coupling a conductive base to the second layer, and providing a medium which is in contact with...
|
|
|
7287327 |
Electret capacitor microphone and method for producing the same
A method for producing an electret capacitor microphone high in sensitivity and stable in acoustic characteristic. A PET film stretched with predetermined tension is bonded to a diaphragm support...
|
|
|
6841917 |
Electrostatic levitation and attraction systems and methods
An electrostatic interaction system includes a first structure having a first fixed electrostatic charge and a second structure having a second fixed electrostatic charge. The polarity of the first...
|
|
|
6818092 |
Multi-layer electret having ultra-high charge stability and method of manufacturing thereof
A multi-layer electret that can endure a high temperature so as to be processed by surface mount technology (SMT) and has ultra-high charge stability and a method of manufacturing thereof are...
|
|
|
6806593 |
Thin film electret microphone
An electret formed by micro-machining technology on a support surface, including a self-powered electret sound transducer, preferably in the form of a microphone, formed by micro-machining...
|
|
|
6717488 |
Resonator with a member having an embedded charge and a method of making thereof
A resonator includes a member with an embedded charge, at least one input electrode, at least one output electrode, and at least one common electrode. The input and output electrodes are spaced...
|
|
|
6621191 |
Structure containing organic molecular layer and use thereof
A novel structure comprising two substrates disposed closely each other, in which an organic molecular layer is formed on the surface of at least one substrate wherein the gap between the surface...
|
|
|
6489033 |
Electrets
Electrets can be produced from cycloolefin copolymers (COCs), and charges applied thereto are stable for long periods, even at high temperatures and high relative humidities. The reduction here in...
|
|
|
6308398 |
Method of manufacturing a wafer fabricated electroacoustic transducer
A method is disclosed for simultaneously producing a plurality of capacitive electroacoustic transducers. The method comprises forming a plurality of electrically insulative substrates by cutting...
|
|
|
5757090 |
Folded dielectric film element and method for maufacturing the same
A folded dielectric film element is provided which converts energy. The film element includes at least one dielectric film that is bent into folds and provided with electrodes. The electrodes are...
|
|
|
5565717 |
Devices for manufacturing electrets, and electrets obtained thereby
To manufacture a thin sheet electret of small size having charge distributed in very uniform manner, even at its edges, use is made of a device comprising a grounded electrode (2) for supporting a...
|
|
|
5491879 |
Procedure to polarize at least one zone of a foil of ferroelectric material to produce a polarized element for piezoelectric or pyroelectric transducers
A method of polarizing selected areas of a foil of ferroelectric material, wherein electrodes are deposited in such a way on the opposite surfaces of the foil that the zone to be polarized extends...
|
|
|
5284692 |
Electrostatic evacuated insulating sheet
An electrostatic evacuated insulating sheet comprises two permanently charged electret repulsion layers (18 and 28) laminated to two respective insulating layers (16 and 26), which are in turn...
|
|
|
5255428 |
Electrooptic polymer voltage sensor and method of manufacture thereof
An optical voltage sensor utilizing an electrooptic polymer is disclosed for application to electric power distribution systems. The sensor, which can be manufactured at low cost in accordance with...
|
|
|
5112677 |
Electret sheet and a method for the production of the same
An electret sheet comprises a porous sheet made of a dielectric polymer and at least one solid material selected from the group consisting of organic materials, inorganic materials, and metallic...
|
|
|
5101543 |
Method of making a variable capacitor microphone
A method of making a variable capacitor microphone in which the fixed capacitor element is formed by first coating the metallized surface of a relatively rigid insulating substrate with a...
|
|
|
4808849 |
Phyllosilicate electrets and a method for their manufacture
An electret comprising an inherently charged material is provided. The material comprises phyllosilicate minerals and has external neutralizing ions removed therefrom or external ions added...
|
|
|
4764690 |
Electret transducing
A backplate assembly for an electret transducer including a backplate, an electret layer covering one surface of the backplate, and a peripheral spacer on the same side of the backplate as the...
|
|
|
4701640 |
Electret transducer and method of fabrication
An electret transducer is comprised of a motor and signal processing apparatus, that may include an amplifier and/or impedance matching means, disposed within a sealed conductive housing. The motor...
|
|
|
4612145 |
Method for producing electret-containing devices
A new method for fabricating electret-containing devices is disclosed. The inventive method includes a new technique for fabricating electrets, which involves applying a voltage across an...
|
|
|
4608109 |
Method of manufacturing high potential electrets
A method for producing stable, layered electrets includes the steps of placing a thin sheet of glassy polymer or copolymer of high molecular weight, such as polyethylene terephthalate, between two,...
|
|
|
4588537 |
Method for manufacturing an electret filter medium
The present invention relates to a continuous method for manufacturing an electret filter medium from dielectric material having an open or porous structure, said method comprising the steps of...
|
|
|
4571464 |
Electret microphone
An electret microphone comprising a rectangular metal electrode, a metallized electret film and an amplifier element encapsulated in a lower and an upper casing half. A contact element comprises a...
|
|
|
4567382 |
Electret transducer and a method for manufacturing an assembly of backplate, electret foil and diaphragm plate
An electret transducer and a method for making same. A multiple support between a diaphragm plate and a backplate is provided by a plurality of relatively small spacing disks made of an...
|
|
|
4542264 |
Lead-frame for an electric microphone
A lead frame for an electric microphone which includes an H-shaped structure of thin metallic material including spaced parallel legs and a crossbar therebetween. A first plate is spaced from the...
|
|
|
4527218 |
Stable positively charged Teflon electrets
A method of producing charged Teflon material having a stable internal positive charge is shown. Partially penetrating positive ions, which may be produced, for example, by a corona discharge or...
|
|
|
4442324 |
Encapsulated backplate for electret transducers
Electrically conductive sheets comprising backplates for electret transducers are substantially encapsulated with hydrophobic electrically insulating coatings. The coatings are melt bonded to both...
|
|
|
4434327 |
Electret transducer with variable actual air gap
An electret transducer for producing a directional response, electret foil (92) and a backplate (94) with the actual air gap thickness therebetween varying in accordance with a predetermined...
|
|
|
4429193 |
Electret transducer with variable effective air gap
A directional electret transducer comprises an electret foil and a metalized backplate the effective air gap thickness therebetween varying according to a predetermined relationship. The...
|
|
|
4429192 |
Electret transducer with variable electret foil thickness
An acoustic transducer for producing highly directional characteristics comprises a metalized backplate (130) facing the flat surface (134) of an electrostatically charged electret foil (132). The...
|
|
|
4429191 |
Electret transducer with variably charged electret foil
An electret transducer for producting a highly directional response characteristic comprises a backplate (18) and, superimposed thereon, an electrostatically charged electret foil (10). The...
|
|
|
4429190 |
Continuous strip electret transducer array
A rough surfaced backplate has deposited thereon a metallic electrode having a plurality of large areas interconnected by thin strips. The large areas are symmetrically located on opposite sides of...
|
|
|
4429189 |
Electret transducer with a selectively metalized backplate
An electret transducer comprises an electrostatically charged electret foil (10) superimposed directly over a selectively metalized rough surface (16) of a backplate (18). Selective metalization is...
|
|
|
4397702 |
Fabrication of non-conductive charged sensing probe unit
A sensing probe unit includes an electrically nonconductive polymeric layer charged with a permanent electric charge to form an electret and intimately bonded to a compensating metal electrode. In...
|
|
|
4381534 |
Process and arrangement for the polarization of shaped objects made from polymers
The invention relates to a method and an arrangement which are of importance in the polarization of shaped articles from polymers. The shaped articles from polymers, polarized by the method as per...
|
|
|
4375718 |
Method of making fibrous electrets
A process of manufacturing an electrostatically charged filtration medium is disclosed. A web made of nonconductive thermoplastic fibers is contacted on each side with a more conductive web to form...
|
|
|
4356049 |
Method of manufacturing an electret device
A method of manufacturing an electret device which comprises the step of causing a pressure deformation jig whose surface is provided with numerous minute convex and concave regions to abut against...
|
|
|
4344810 |
Apparatus for making tape transducer
Apparatus for continuously producing an elongated composite tape transducer having an inner laminate with a conductive dielectric-covered strip and two outer laminates each with a conductive foil...
|
|
|
4147562 |
Pyroelectric detector
A pyroelectric detector as formed by parylene C polymer film.
|
|
|
4127681 |
Single electrode poling of dielectric films
A polarized pellicular resin article is prepared by bringing one surface of a pellicle of a polarizable, dielectric resin into intimate contact with a single electroconductive surface and charging...
|
|
|
4070741 |
Method of making an electret acoustic transducer
In the method of construction disclosed herein, posts for supporting the condenser transducer diaphragm in relation to a backplate are formed on the diaphragm film itself by selectively etching...
|
|
|
4047998 |
Method of polarizing a thermoplastic resin film
A method is disclosed for polarizing a thermoplastic resin film having a continuous metal electrode on one surface and a plurality of discrete electrodes on the other surface. An additional...
|
|
|
4042438 |
Method of assembling a diaphragm assembly for an electro-acoustic transducer
In assembling at least one metal frame in abutting supporting relation to a diaphragm to form a diaphragm assembly for an electro-acoustic transducer, for example, as in a microphone or headphone,...
|
|
|
4037310 |
Method of manufacturing a homopolar electret from a foil
A method of manufacturing a homopolar electret from a foil of a non-polar polymer, preferably TEFLON-FEP or PFA. The polymer foil is formed into an electret by heating it above the transition...
|
|
|
4014091 |
Method and apparatus for an electret transducer
An improved method for making a backplate assembly for an electret transducer used in a microphone wherein a synthetic resin film such as polytetrafluoroethylene or fluorinated ethylene-propylene...
|
|
|
3978580 |
Method of fabricating a liquid crystal display
In forming the back panel of a liquid crystal display, layers of an insulating material and aluminum are successively deposited on the surface of a semiconducting substrate having an array of...
|
|
|
3952405 |
Method for fabricating a liquid crystal display
A method for fabricating a liquid crystal display device includes the steps of providing a pair of insulated electrode-carrying plates, depositing on the surface of one of the plates, overlying the...
|
|
|
3939556 |
Liquid crystal cell
A liquid crystal cell is made by covering a wafer with an electrode system. A second insulating and transparent wafer is covered with a second system of semi-transparent electrodes. A wall of...
|
|
|
3755043 |
ELECTRET HAVING IMPROVED STABILITY
In a process for the production of an electret composed of a high molecular weight base material by applying to the base material a high D. C. potential at a high temperature, cooling the material...
|