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| Number | Title | Issue Date |
| 7002787 | Capacitor apparatus of the capacity variable type The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an insulating substrate (2) in which at least two capacitor electro... | 02/21/2006 |
| 6970340 | Capacitor apparatus of the capacity variable type The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an insulating substrate (2) in which at least two capacitor electro... | 11/29/2005 |
| 6961228 | Capacitor apparatus of the capacity variable type The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an insulating substrate (2) in which at least two capacitor electro... | 11/01/2005 |
| 6853534 | Tunable capacitor A tunable capacitor. The tunable capacitor has a first fixed capacitor electrode and a second fixed capacitor electrode opposite to one another. The tunable capacitor also has a movable element formed of a conductive material. The movable element is moveable between... | 02/08/2005 |
| 6683780 | Capacitive displacement sensor A displacement responsive device e.g. a measurement probe (110) is disclosed. Displacement of a stylus (130) causes resilient movement of a carriage (134) supported by planar springs (112) and (114). This movement is detected by a capacitance sensor (160)... | 01/27/2004 |
| 6625004 | Electrostatic actuators with intrinsic stress gradient An electrostatic actuator with an intrinsic stress gradient is provided. The electrostatic actuator comprises an electrode and an electrostatically actuated beam fixed at one end relative to the electrode. The electrostatically actuated beam further inclu... | 09/23/2003 |
| 6498712 | Variable capacitor A variable electronic component in the nature of a trimmed capacitor has a very low cost and simple design. A dielectric housing has an open end that a plug may be press fit into. The plug grips an upper region of the dielectric housing with at least one ... | 12/24/2002 |
| 6496351 | MEMS device members having portions that contact a substrate and associated methods of operating MEMS devices include a substrate, an anchor attached to the substrate, and a multilayer member attached to the anchor and spaced apart from the substrate. The multilayer member can have a first portion that is remote from the anchor and that curls away fr... | 12/17/2002 |
| 6404614 | Voltage tuned dielectric varactors with bottom electrodes A voltage tunable dielectric varactor includes a substrate having a first dielectric constant and having generally a planar surface, first and second electrodes positioned on the generally planar surface of the substrate, the first and second electrodes b... | 06/11/2002 |
| 6400550 | Variable capacitors including tandem movers/bimorphs and associated operating methods A variable capacitor is provided having first and second capacitor plates, a tandem mover and an actuator. The first and second capacitor plates are positioned such that the first and second capacitor plates face one another in a spaced apart relationship... | 06/04/2002 |
| 6396677 | Photolithographically-patterned variable capacitor structures and method of making A new type of high-Q variable capacitor includes a substrate, a first electrically conductive layer fixed to the substrate, a dielectric layer fixed to a portion of the electrically conductive layer, and a second electrically conductive layer having an an... | 05/28/2002 |
| 6377438 | Hybrid microelectromechanical system tunable capacitor and associated fabrication methods A microelectromechanical system (MEMS) tunable capacitor having low loss and a corresponding high Q is provided. The tunable capacitor includes a first substrate having a first capacitor plate disposed thereon. A fixed pivot structure is disposed on the f... | 04/23/2002 |
| 6229684 | Variable capacitor and associated fabrication method A variable capacitor having low loss and a correspondingly high Q is provided. In addition to a substrate, the variable capacitor includes at least one substrate electrode and a substrate capacitor plate that are disposed upon the substrate and formed of ... | 05/08/2001 |
| 6226168 | Variable capacitor A variable capacitor includes a stator, a conductive rotor, and a spring-action portion. The rotor electrode projects from the rotor, and a protrusion extends from the rotor as far as the rotor electrode, wherein the protrusion is formed on the rotor in a... | 05/01/2001 |
| 6147856 | Variable capacitor with wobble motor disc selector Devices for use in highly integrated radio frequency transceivers utilize micro-electro-mechanical systems, or wobble motors, to form superior switches and to select and vary components that determine different frequencies of operation. Each device has a ... | 11/14/2000 |
| 6088214 | Voltage variable capacitor array and method of manufacture thereof An array (100) of voltage variable capacitors (110) is provided in which voltage variable capacitors (110) are fabricated with piezoelectric displacement devices (150). Voltage variable capacitors (110) have first plates (120) which are coupled to displac... | 07/11/2000 |
| 5925921 | Geometrical layout technique for a circular capacitor within an array of matched capacitors on a semiconductor device A geometrical layout technique for an individual circular capacitor in a semiconductor device. Circular capacitors reduce the detrimental effects of (1) corner etching, (2) peripheral capacitance, (3) capacitor to capacitor coupling, and (4) electric fiel... | 07/20/1999 |
| 5892652 | Sensitive key device having a detective surface in direct contact with a plate This invention concerns a sensitive key device with capacitive effect working through an electrically insulating plate, the key being supported by a printed circuit board. According to the invention, the bottom of a single part having a spring blade made ... | 04/06/1999 |
| 5557495 | Variable capacitor and method A variable capacitor and method of varying capacitance in which two pressurally engaged plates having electrically conductive patterns on facing surfaces are separated by a low friction polytetrafluoroethylene (Teflon™) dielectric disk so that the plate... | 09/17/1996 |
| 4937694 | Capacitor element with patterned electrode areas for capacitive measuring device In order to so improve capacitive measuring devices equipped with capacitor elements having patterned electrode areas that they shall allow more accurate measurement and higher resolution than conventional elements of this design, the capacitor elements e... | 06/26/1990 |
| 4862752 | D.C. excited capacitive shaft rotation transducer A capacitive transducer for measuring the rotation of a shaft including relatively movable rotor and stator elements. A unique arrangement of capacitive plates is mounted on the stator and rotor for producing a signal indicative of shaft rotation using di... | 09/05/1989 |
| 4190877 | Miniature variable capacitor A miniature variable capacitor comprises a base plate having a base plate main part having stator support poles embedded in one surface of said base plate main part and mounting plate parts extending from said base plate main part in lateral directions an... | 02/26/1980 |
