|
Match
|
Document |
Document Title |
|
|
7589439 |
Electromechanical transducer element, method for forming an electromechanical transducer element and transducer formed by said method
Electromechanical transducer element for converting mechanical force, such as vibrations, into electrical signals and a method for fabricating the same, the transducer having a layered structure...
|
|
|
7553440 |
Method and apparatus for electric treatment of substrates
Methods and apparatus for hydrodischarging and hydrocharging substrates and articles to produce enhanced ability to avoid attraction of contaminants or improved capability of removing contaminants...
|
|
|
7525205 |
Electric power generator
An electric power generator capable of using external vibrations in various directions to generate power. A fixed substrate having a surface with a plurality of electret electrodes and a movable...
|
|
|
7498699 |
Electret and composite formed therewith
An electret and composite formed therewith. The electret includes a polymer, copolymerizing from monomers including VdF as a first monomer and HFP, CTFE, TFE, or combinations thereof as a second...
|
|
|
7309558 |
Use of salt-like structured silicas as charge control agents
The present invention relates to the use of salt-like structured silicates, in which the cation is NH 4 + , H 3 O + , an alkali metal, alkaline earth metal, earth metal or transition metal ion or a...
|
|
|
7244292 |
Electret article having heteroatoms and low fluorosaturation ratio
An electret article that includes a polymeric material that has electric charge imparted thereto, that has one or more heteroatoms, that has a fluorosaturation ratio of less than 200, and that has...
|
|
|
7244291 |
Electret article having high fluorosaturation ratio
An electret article that includes a polymeric material that has electric charge imparted thereto, that has a CF 3 :CF 2 ratio of at least 0.15 and that has a fluorosaturation ratio greater than...
|
|
|
7113321 |
Optical deflection apparatus and manufacturing method thereof, optical deflection array, imaging apparatus, and image projection display apparatus
A miniaturized and highly integrated optical deflection apparatus is realized in which the number of electrodes for driving the optical deflection apparatus is reduced. The optical deflection...
|
|
|
7015254 |
Description of an inorganic polymer “electret ”in a colloidal state along with the method of generating and applications
The present invention includes an apparatus for generating an inorganic polymer electret in a colloidal state, the inorganic electret in a colloidal state itself, and applications for the inorganic...
|
|
|
6893990 |
Stable electret polymeric articles
A porous polymeric sheet is provided having an electrostatic charge and comprising a zero-three composite of a polymeric matrix and a ferroelectric material dispersed therein. The polymeric...
|
|
|
6870939 |
SMT-type structure of the silicon-based electret condenser microphone
This invention mainly provides a SMT-type structure of the minimized and low-power silicon-based electret condenser microphone. Primarily integrates with the electret, silicon-based, MEMS and...
|
|
|
6852402 |
Dielectric cellular electret film and procedure for its manufacture
Film of dielectric material, which film contains gas bubbles preferably of a flat shape. To achieve improved electrical properties, the film is given a large internal unipolar charge, which is...
|
|
|
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...
|
|
|
6759769 |
Electromechanic film and acoustic element
An electromechanic film intended for transforming electric energy into mechanical energy and transforming mechanical energy into electric energy. The film ( 1 ) is dielectric and formed of cells (...
|
|
|
6743464 |
Method of making electrets through vapor condensation
A method of making an electret includes condensing vapor from the atmosphere of a controlled environment onto a dielectric article and then drying the article to remove the condensate. The...
|
|
|
6694032 |
Electret condenser microphone
The present invention relates to an electret condenser microphone including the vibratory diaphragm which is comprised of an electret film into which an electric charge is charged; a conductive...
|
|
|
6658938 |
Electret transducer
A transducer with at least one variable-area capacitor comprising a flexible electrode with a surface facing a surface of a cooperating rigid electrode and an electret affixed to a portion of one...
|
|
|
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...
|
|
|
6472776 |
Helmet mount for night vision device
A flip-up helmet mount for a night vision device with a goggle horn for attachment to the helmet mount is disclosed. The flip-up helmet mount includes an adjustable socket assembly for mounting...
|
|
|
6406657 |
Method and apparatus for making a fibrous electret web using a wetting liquid and an aqueous polar liquid
A method for imparting an electrostatic charge to a nonwoven fibrous web 20 . The fibrous web 20 is wetted with a wetting liquid 24 , followed by being saturated with an aqueous polar liquid ...
|
|
|
6143455 |
Use of aluminum azo complex dyes as charge control agents
Aluminum azo complex dyes of the formula (I) or (I') ##STR1## are used as charge control agents in electrophotographic toners and developers, powder coating materials, electret materials, color...
|
|
|
5917437 |
Keyboard
A keyboard according to the present invention, which includes one or more keys and corresponding electromechanical converting elements, is characterized in that it includes a film construction (42)...
|
|
|
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...
|
|
|
5726107 |
Non-wovens of electret fiber mixtures having an improved charge stability
A non-wovens fabric of electret fibers having an improved charge stability and comprising materials which chiefly comprise a fiber-forming addition or condensation polymer and 0.01 to 30% by weight...
|
|
|
5610455 |
Electret containing syndiotactic vinyl aromatic polymer
Electrets are disclosed comprising syndiotactic vinyl aromatic polymer, for example syndiotactic polystyrene. These electrets have good charge retention at elevated temperature.
|
|
|
5590014 |
Method and apparatus for supplying electric power
A method and apparatus are provided for supplying electric power in the form of an output d.c. voltage. An electret material emits the output d.c. voltage in response to continuously applying a...
|
|
|
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...
|
|
|
5558809 |
Polymer electrets with improved charge stability
The use of additives to produce polymer electrets with improved charge stability. In particular, the invention relates to the use of specific charge control agents used for toners that are blended...
|
|
|
5544001 |
Electrostatic relay
An electrostatic relay comprises at least one fixed base having a fixed electrode and an actuator frame having a movable electrode. The fixed base carries a pair of fixed contacts insulated from...
|
|
|
5543224 |
High molecular electret film
A high molecular electret film which comprises an electret film of a blend of a poly(2,6-dialkyl-1,4-phenylene oxide) consisting of a recurring unit represented by the following general formula...
|
|
|
5536982 |
Ultra thin polymer film electret
The invention concerns an ultra thin polymer film electret comprising a polymer and a substrate having a surface electric charge, wherein a side chain of the polymer and the substrate are...
|
|
|
5436033 |
Method of manufacturing a polymer ultra thin film electret
The invention concerns an ultra thin polymer film electret comprising a polymer and a substrate having a surface electric charge, wherein a side chain of the polymer and the substrate are...
|
|
|
5429848 |
Electret tubular nonwoven fabric comprising circumferentially oriented parallel reinforcing fibers within a tubular nonwoven fabric
Disclosed are a process for producing a tubular nonwoven fabric and tubular nonwoven fabrics produced by the same. In the process, a web is formed on a first rotating cylinder by catching fibers...
|
|
|
5408187 |
Electrical fault indicator utilizing a liquid crystal polymer gel dispersion exhibiting two stable contrasting optical states at zero field
A polymer stabilized cholesteric textures wafer is sandwiched between two electrode plates, one of which is transparent. Terminals are provided for connection in parallel with a circuit protection...
|
|
|
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...
|
|
|
5267076 |
Process for obtaining a structure generating non-linear electrooptical effects, structure obtained and applications thereof
The invention relates to the obtaining of a structure generating non-linear electrooptical effects, the effects being due to molecules or inter-molecular groupings possessing a non-linear...
|
|
|
5256176 |
Film electret and an electret filter
A film electret and an electret filter that contain a polar high-molecular weight compound and that provides a TSDC curve having a homocharge peak temperature of at least 95° C. and a heterocharge...
|
|
|
5061760 |
Vinylidene cyanide alternating copolymers exhibiting nonlinear optical and piezoelectric properties
In one embodiment this invention provides vinylidene cyanide copolymers with alternating monomeric units as illustrated by the following structure: ##STR1## An invention vinylidene cyanide...
|
|
|
5057710 |
Electret materials and the method for preparing the electret materials
This invention relates to an electret material having thermal stability and capable having high trapped charge quantity and stably existing for a long period of time and a process for preparing the...
|
|
|
5057588 |
Vinylidene cyanide alternating copolymers
In one embodiment this invention provides vinylidene copolymers with alternating monomeric units as illustrated by the following structure: ##STR1## An invention vinylidene copolymer in the form of...
|
|
|
5019723 |
Self-regulated therapeutic agent delivery system and method
A self-regulated system and method for controllably administering a therapeutic agent to a patient is disclosed. A therapeutic agent is driven by unidirectional electrostatic diffusion across a...
|
|
|
4993072 |
Shielded electret transducer and method of making the same
An electret transducer including a pair of spaced electrodes, one electrode being connected to a preamplifier input, an insulator on the outer surface of the electrode connected to the preamplifier...
|
|
|
4910840 |
Electroacoustic transducer of the so-called "electret" type, and a method of making such a transducer
This invention provides an electroacoustic transducer and a method of making it. The transducer according to the invention comprises a substrate of a semiconductor material with a recessed portion....
|
|
|
4886527 |
Multilayer electret filter and process of using same
A multilayer filter pack includes at least three adjacent layers of fibrous material, each of which is permanently electrically charged and not more than 10 mm thick. The upstream and middle layers...
|
|
|
4874659 |
Electret fiber sheet and method of producing same
An electret fiber sheet has polarized charges on its surface and preferably has charges in ordered orientation across it. The polarized charges are present in an amount of at least 7×10 -11 C/cm...
|
|
|
4857757 |
Drive circuit for a two layer laminated electrostriction element
A drive circuit of a two-laminated electrostriction element, wherein a common junction of two sheets of electric distortion elements is connected to one of the driving power source through a first...
|
|
|
4817164 |
Electrostatic discharge protector for an electret microphone
A holder for an electret microphone of the type having a front acoustic aperture and peripheral acoustic apertures is made of insulating material and includes a first sleeve portion of a diameter...
|
|
|
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...
|