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| Number | Title | Issue Date |
| 8183739 | Electroactive polymer actuated devices Devices employing electroactive polymer actuators are disclosed. The devices include pumps, valves, cameras (where electroactive polymer actuators control either one or both of zoom and focus), vibrators (for inclusion in cell phones, game console controls, etc.) an... | 05/22/2012 |
| 8169122 | Ultra sonic release of DNA or RNA Method and apparatus for sonication in connection with preparing a cellular sample containing DNA or RNA for performance of polymerase chain reaction (PCR) or for other reasons where it is important to break down the cell walls and other cellular structures to relea... | 05/01/2012 |
| 8072119 | Piezoelectric component A piezoelectric component with a body in which electrically connected transducer elements are realized is disclosed. The transducer elements are separated from each other by an essentially field-free neutral region of the body. A first transducer element has electri... | 12/06/2011 |
| 8022595 | Asymmetric composite acoustic wave sensor A composite acoustic wave device provides improved protection from environmental factors while maintaining high electrical characteristics and dynamic range is provided. The device comprises a rigid protector plate having high quality acoustical characteristics and ... | 09/20/2011 |
| 7982366 | Ultrasound transducer with a dumbbell-shaped chamber An ultrasound transducer has a cup-shaped casing. The cup-shaped casing has a sidewall. A cross section of an inner surface of the sidewall being perpendicular to a central axis of the ultrasound transducer substantially shows a dumbbell-shaped contour. The dumbbell... | 07/19/2011 |
| 7956514 | Ultrasonic attenuation materials Improved acoustic attenuation materials and applications are provided. An improved acoustic attenuation material may include a woven layer of fibers made of porous polymers, such as porous polytetrafluoroethylene (PTFE), that include interstitial space. An improved ... | 06/07/2011 |
| 7948148 | Piezoelectric transducer A miniature piezoelectric transducer element is provided, comprising; (a) a cell element having a cavity; (b) a flexible piezoelectric layer attached to the cell member, the piezoelectric layer having an external surface and an internal surface, the piezoelectric la... | 05/24/2011 |
| 7944118 | System and methodology for generating electricity using at least one heat engine and thermoacoustic element to apply cyclic pressure gradients to piezoelectric material A system for generating electrical power supply signals includes at least one heat engine that undergoes heating/cooling cycles and corresponding temperature variations. A thermoacoustic element is thermally coupled to the chamber. The temperature variations of the ... | 05/17/2011 |
| 7902722 | Transducer apparatus for intravascular blood flow measurement A dual spiral transducer and method of manufacture of same is disclosed. In one aspect, the transducer comprises a central rod, a first spiral piezoelectric electrode wrapped around a circumference of the rod, the electrode being advanced around the rod at a determi... | 03/08/2011 |
| 7898151 | Ultrasonic sensor having a piezoelectric element An ultrasonic sensor having a piezoelectric element including first and second electrodes is disclosed. The ultrasonic sensor includes an aluminum case having a bottom part electrically contacting the second electrode of the piezoelectric element, a first conductive... | 03/01/2011 |
| 7847468 | Ultrasonic transducer and ultrasonic apparatus having the same An ultrasonic transducer (101, 102, 103) includes: a front member (1, 1a) having a front side on which an ultrasonic radiating surface (11) is provided and a back side which is opposite to the front side; a side member (2, 2a | 12/07/2010 |
| 7821180 | Curved two-dimensional array transducer A curved two-dimensional array transducer includes a layer of piezoelectric material overlaying a layer of ASICs which is attached to a backing wing. The piezoelectric material is diced in orthogonal azimuth and elevation directions to form a two-dimensional array o... | 10/26/2010 |
| 7728487 | Ultrasound transducer manufactured by using micromachining process, its device, endoscopic ultrasound diagnosis system thereof, and method for controlling the same An ultrasound transducer manufactured by using a micromachining process comprises: a first electrode into which a control signal for transmitting ultrasound is input; a substrate on which the first electrode is formed; a second electrode that is a ground electrode f... | 06/01/2010 |
| 7728486 | Ultrasonic sensor An ultrasonic sensor includes a case having a substantially cylindrical shape with a bottom. The case has a piezoelectric element provided on the bottom, and a cushion member is engaged with a side portion of an opening of the case. A substrate and pin terminals are... | 06/01/2010 |
| 7710000 | Erosion and wear resistant sonoelectrochemical probe The present invention, in one set of embodiments, provides methods and systems for integrating conducting diamond electrodes into a high power acoustic resonator. More specifically, but not by way of limitation, in certain embodiments of the present invention, diamo... | 05/04/2010 |
| 7701118 | Ultrasonic flow rate measuring device An ultrasonic flow rate measuring device for measuring the flow rate through a line through which a medium flows has at least one ultrasonic transducer that has a piezo element and a connecting element designed for attaching the ultrasonic transducer to the line wit... | 04/20/2010 |
| 7675221 | Ultrasonic transducer and manufacturing method thereof Disclosed is an improved construction of an ultrasonic transducer, wherein a charge is not easily injected into an insulating film even when the bottom of a membrane comes in contact with a lower electrode, and a manufacturing method thereof without using the wafer ... | 03/09/2010 |
| 7586236 | Tri-axial hybrid vibration isolator A tri-axial vibration isolation device having: a passive isolation assembly including a first frame, a plurality of passive lateral isolators supporting the support frame on the base, and a plurality of passive vertical isolators; and an actuator assembly including ... | 09/08/2009 |
| 7567016 | Multi-dimensional ultrasound transducer array In k31 mode, a vibration is along an axis or orthogonal to the poling or electric field orientation. The direction of vibration is toward a face of an ultrasound transducer array. For each element of the array, electrodes are formed perpendicular to the f... | 07/28/2009 |
| 7495370 | Hybrid transducer A longitudinal vibrator-type transducer including: a head mass; a tail mass; a first piezo-resonator positioned between the head and tail masses; and, a coupling member coupling the head mass, tail mass and first piezo-resonator together; wherein, the head mass comp... | 02/24/2009 |
| 7411335 | Sonic or ultrasonic transducer A sonic or ultrasonic transducer, which is embodied as a radial oscillator. So that the sonic or ultrasonic transducer can be used at high temperatures, a matching layer is located between the radial oscillator and the atmosphere into which the ultrasonic signals ar... | 08/12/2008 |
| 7388454 | Acoustic resonator performance enhancement using alternating frame structure Disclosed is an acoustic resonator that includes a substrate, a first electrode, a layer of piezoelectric material, a second electrode, and an alternating frame region. The first electrode is adjacent the substrate, and the first electrode has an outer perimeter. Th... | 06/17/2008 |
| 7388317 | Ultrasonic transmitting/receiving device and method for fabricating the same An ultrasonic transmitting/receiving device that effectively suppresses ringing during emission of ultrasonic waves and improves time resolution when measuring a sonic velocity includes a pair of ultrasonic transducers. Each of the ultrasonic transducers has a piezo... | 06/17/2008 |
| 7385334 | Contour mode resonators with acoustic reflectors A microelectromechanical (MEM) resonator is disclosed which has a linear or ring-shaped acoustic resonator suspended above a substrate by an acoustic reflector. The acoustic resonator can be formed with a piezoelectric material (e.g. aluminum nitride, zinc oxide or ... | 06/10/2008 |
| 7382079 | Piezoelectric device for generating acoustic signal There is provided a piezoelectric device for generating an acoustic signal in which an expansion mechanism expands a disposition of a laminated piezoelectric actuator by the principle of leverage. The mass of a base member placed in the expansion mechanism is larger... | 06/03/2008 |
| 7378776 | Piezoelectric ceramic composition and piezoelectric elements using the same A piezoelectric ceramic composition includes a top-layer, a bottom-layer and at least one intermediate-layer ceramic sheets stacked to each other for sintering. An alloy layer of silver and palladium is interposed between every two ceramic sheets, and a sliver layer... | 05/27/2008 |
| 7378779 | Thermally enhanced piezoelectric composite system and method A system and method for removing unwanted heat generated by a piezoelectric element of an ultrasound transducer. Some implementations have high thermal conductivity (HTC) material placed adjacent to the piezoelectric element. The HTC material can be thermally couple... | 05/27/2008 |
| 7371459 | Electrical devices having an oxygen barrier coating An electrical device includes two electrodes and a conductive polymer layer, containing a mixture of a polymer and a conductive filler, separating the electrodes. A oxygen barrier material containing a thermosetting polymer component is present on the exposed surfac... | 05/13/2008 |
| 7372061 | Method and system for detecting the position of an edge of a web A method and system for determining the lateral position of an edge of a web are disclosed. The system includes a plurality of optical transmitters, a plurality of optical receivers, a plurality of ultrasonic transmitters, a plurality of ultrasonic receivers, and a ... | 05/13/2008 |
| 7368857 | Piezoelectric resonator element, piezoelectric, resonator, and piezoelectric oscillator Exemplary embodiments provide a piezoelectric resonator element, to reduce the reaching of an attenuating vibration of a main vibration to a marginal edge of the piezoelectric resonator element, as well as to stabilize an oscillating-frequency without worsening the ... | 05/06/2008 |
| 7368852 | Electrically conductive matching layers and methods Matching layers are provided, including: electrically conductive acoustic matching layers, methods for conducting electric current through matching layers, methods for manufacturing multi-dimensional arrays using conductive matching layers, and multi-dimensional arr... | 05/06/2008 |
| 7362198 | Pass bandwidth control in decoupled stacked bulk acoustic resonator devices The decoupled stacked bulk acoustic resonator (DSBAR) device has a lower film bulk acoustic resonator (FBAR), an upper FBAR stacked on the lower FBAR, and an acoustic decoupler between the FBARs. Each of the FBARs has opposed planar electrodes and a layer of piezoel... | 04/22/2008 |
| 7356894 | Method of producing a micro-actuator In a method of producing a micro-actuator, a first adhesive is applied to a movable plate, and a movable, and a movable electrode is placed on the first adhesive. A second adhesive is applied to the movable electrode, and a piezoelectric element is placed on the sec... | 04/15/2008 |
| 7358645 | Backing, transducer array and method for thermal survival Backing blocks, transducer arrays and methods are provided for thermal cycle survivability. By decoupling a portion of the backing block from a case used to contain the transducer stack, the greater thermal expansion properties of most backing blocks may be minimize... | 04/15/2008 |
| 7355322 | Ultrasonic transducer, ultrasonic speaker and method of driving and controlling ultrasonic transducer An ultrasonic transducer including: a fixed electrode; a vibrating film placed opposite to a surface of the fixed electrode and having a conducting layer; a member that holds the fixed electrode and vibrating film; the fixed electrode including a driving-use fixed e... | 04/08/2008 |
| 7352262 | Insulation of anti-resonance in resonators A cancellation circuit to remove the anti-resonance signal from a resonator. Micro-mechanical and surface and bulk acoustic wave resonators include an anti-resonance in an output signal. This has an undesirable effect on certain types of systems in their function an... | 04/01/2008 |
| 7341561 | Wrist-worn high-accuracy pulsation measuring apparatus A wrist-worn apparatus capable of sensing pulsation of blood in the blood tubes of a user's wrist with high accuracy. The apparatus comprises a body of the apparatus, a band to be used to wear the body of the apparatus on the user's wrist, and a fluid-containing pul... | 03/11/2008 |
| 7332850 | Microfabricated ultrasonic transducers with curvature and method for making the same The present invention provides a microfabricated ultrasonic transducers with curvature. The curvature is made possible by thinning the substrate such that it is flexible enough to be mounted on an assembly with the desired curvature. In one aspect of the invention, ... | 02/19/2008 |
| 7331092 | Method and manufacturing surface acoustic wave device A method of manufacturing a surface acoustic device that has a surface acoustic wave filter including comb-like electrodes, electrode pads, and wiring patterns formed on a joined substrate produced by joining a piezoelectric substrate and a supporting substrate to e... | 02/19/2008 |
| 7329975 | Ultrasonic sensor An ultrasonic sensor includes a plurality of converters and a protection component. The plurality of converters convert one of a received ultrasonic wave into an electric signal and an electric signal into an ultrasonic wave for transmission. The plurality of conver... | 02/12/2008 |
