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| Number | Title | Issue Date |
| 7338446 | Method and apparatus for controlling power in an ultrasound system Methods and systems for controlling an ultrasound system are provided. The method includes receiving scanning information from an ultrasound system, with the scanning information including at least one of image information and spectral information. The method furthe... | 03/04/2008 |
| 7292025 | Bipolar interrogation for magnetostrictive transducers A magnetostrictive-based sensor is disclosed which obtains higher return signals through the use of multiple consecutive input pulses. ... | 11/06/2007 |
| 7256365 | Electrode holder with integrated ultrasound sensor A connecting element for connecting and/or fixing an electrode with an electrode arm of a welding apparatus has a base body; and a sensor selected from the group consisting of a sensor for introducing ultrasound waves into an electrode, a sensor for receiving ultras... | 08/14/2007 |
| 7234353 | Non-fluid acoustic coupling An apparatus examines the internal structure of an object disposed substantially in a medium such as air. The apparatus has an acoustic transducer assembly that emits and receives acoustic signals and an acoustic coupler that acoustically couples the acoustic transd... | 06/26/2007 |
| 7204147 | Ultrasonic inspection method for weld zone An inspection method can easily determine welding condition by just comparing an echo height returned from the weld zone of a real product with a master data. An master data is made based on the data from prepared test pieces corresponding to the real product... | 04/17/2007 |
| 7201065 | Acoustic flow sensor A fluid flow sensor uses pairs of acoustic transducers to generate quasi-helical acoustic beams reflected multiple times from an inside surface of a pipe. The transducers are arranged so that each two pairs generate counter-rotating beams. When fluid flowing in the ... | 04/10/2007 |
| 7190103 | Matching circuit for megasonic transducer device A method and apparatus for matching impedance magnitude and impedance phase for an acoustic-wave transducer load and an RF power source. The acoustic-wave transducer load has a load impedance magnitude and phase. The RF power source has a source impedance magnitude ... | 03/13/2007 |
| 7181981 | Ultrasonic tomograph, system and method for ultrasonic tomographic measurement using same The invention relates to an ultrasonic tomograph for spatial and temporal characterisation of fluids in motion such as air and water. This tomograph comprises a plurality of pairs of emitting-receiving ultrasonic probes, whereas each pair may be inscribed, diametral... | 02/27/2007 |
| 7122401 | Area array type semiconductor package fabrication method An area array type semiconductor package includes a plurality of conductive media such as solder bumps or solder balls, attached to respective bond pads of a chip. The conductive media act as external output terminals. The chip is attached to a lead frame by a therm... | 10/17/2006 |
| 7104132 | Acoustic coupling with a fluid bath An apparatus examines the internal structure of an object disposed substantially in a medium such as air. The apparatus has an acoustic transducer assembly that emits and receives acoustic signals and an acoustic coupler that acoustically couples the acoustic transd... | 09/12/2006 |
| 7055389 | Acoustic coupling with a fluid retainer An apparatus examines the internal structure of an object disposed substantially in a medium such as air, which essentially totally reflects acoustic signals in the 1-200 MHz frequency range. The apparatus has an acoustic transducer that emits and receives acoustic ... | 06/06/2006 |
| 7044000 | Ultrasonic flow sensor using quasi-helical beam A probe type acoustic transit-time flow sensor has paired transducers arranged to generate quasi-helical acoustic beams making a plurality of reflective contacts with a pipe's interior wall. The transducers in each pair are spaced apart along the flow axis so that t... | 05/16/2006 |
| 6973842 | Flow probe pipe size detector An acoustic time-of-flight size measuring device is added to the sensing head of an insertion probe sensor which may be used for measuring the flow of fluid in a pipe. The size-measuring device defines an acoustic beam making a plurality of reflective contacts with ... | 12/13/2005 |
| 6973832 | Acoustic coupling with a fluid bath An apparatus examines the internal structure of an object disposed substantially in a medium such as air, which essentially totally reflects acoustic signals in the 1-200 MHz frequency range. The apparatus has an acoustic transducer that emits and receives acoustic ... | 12/13/2005 |
| 6947851 | Transceiver circuit for an ultrasonic flowmeter A transmitting and receiving circuit for an ultrasonic flowmeter. In such circuits, an ultrasonic transducer is typically used as both transmitter and receiver. This is obtained by using switching means, for example in the form of CMOS switches. However, problems ar... | 09/20/2005 |
| 6940212 | Non-fluid acoustic coupling An apparatus examines the internal structure of an object disposed substantially in a medium such as air, which essentially totally reflects acoustic signals in the 1-200 MHz frequency range. The apparatus has an acoustic transducer that emits and receives acoustic ... | 09/06/2005 |
| 6938470 | Method and apparatus for downhole fluid characterization using flexural mechanical resonators The present invention provides a downhole method and apparatus using a flexural mechanical resonator, for example, a tuning fork to provide real-time direct measurements and estimates of the viscosity, density and dielectric constant of formation fluid or filtrate i... | 09/06/2005 |
| 6909988 | Method for positioning defects in metal billets A process for positioning at least one defect in a billet being forged into an article is described. The size and location of the billet is first determined, using a non-destructive test such as ultrasonic inspection. The movement of the defect under selected forgin... | 06/21/2005 |
| 6637270 | System for transmitting ultrasonic waves The invention relates to a transmitting system for the generation of ultrasonic waves for testing materials, comprising a controllable signal generator and an ultrasonic transducer, wherein the signal generator and the ultrasonic transducer are arranged i... | 10/28/2003 |
| 6522415 | Device and method for determining a relative position of two objects with regard to one another Arrangements and methods for determining a relative position of two objects with respect to one another are presented wherein a radiation source generates a characteristic radiation field and a receiver measures radiation quantities of the radiation. The ... | 02/18/2003 |
| 6374675 | Acoustic microscopy die crack inspection for plastic encapsulated integrated circuits A novel method of non-destructive die crack inspection of a plastic encapsulated integrated circuit (PEIC) uses a scanning acoustic microscope, such as a C-mode scanning acoustic microscope. To generate scan of a die surface of the PEIC, the width of a da... | 04/23/2002 |
| 6321588 | Chemical sensor array A device for detecting chemical substances includes a plurality of sensors arranged in an array. The sensors are connected to respective oscillator circuits which drive the sensors, and the oscillator circuits are coupled to a power multiplexer which prov... | 11/27/2001 |
| 5922962 | Sparse two-dimensional transducer array with compound lens A two-dimensional ultrasonic transducer for forming images. The transducer has a plurality of transducer elements for producing ultrasonic bursts in a predetermined manner, and receiving reflected ultrasound from the subject under examination due to the u... | 07/13/1999 |
| 5841032 | Variable and fixed frequency pulsed phase locked loop A measuring apparatus uses a variable and fixed frequency pulsed phase locked loop to measure the phase shift caused by a delay path to a high degree of accuracy. This accurate measurement of total phase change through greater than 360 degrees allows the ... | 11/24/1998 |
| 5837899 | Ultrasonic testing (UT) system having improved signal processing An ultrasonic testing system can receive data from at least two ultrasonic transducers and process the data in parallel to each other. The testing system can compress the data by a fixed ratio by storing the value of the sample having the highest-amplitud... | 11/17/1998 |
| 5808200 | Ultrasonic sensor with continous and demand self-test for liquid and dry product level measurement An ultrasonic sensor having a support structure of first and second walls with a gap of fixed distance therebetween. A piezoelectric element for transmitting and receiving ultrasonic energy is bonded to the inner face of one of the walls and the energy tr... | 09/15/1998 |
| 5671154 | Signal processing method and signal processing device for ultrasonic inspection apparatus In an ultrasonic inspection apparatus for detecting a flaw present in a target object (2) on the basis of an echo signal (b) from the target object (2), a high-frequency echo signal (b) output from an ultrasonic transmit-receive unit (1) is A/D-converted ... | 09/23/1997 |
| 5621173 | Method and apparatus for non-contact determination of the weight per unit area of thin materials A method and apparatus for non-contact determination of the weight per unit area and the thickness of thin materials. This involves directing an ultrasonic wave at the material and measuring the proportion of sound energy that passes through the material.... | 04/15/1997 |
| 5573041 | Dispenser control with ultrasonic position detection A method and apparatus is provided to detect the position of an object, such as a container, within a multidimensional target space above which is a dispensing spigot to dispense water, ice, or other beverage. The dispenser control is also applicable to o... | 11/12/1996 |
| 5511424 | Remote preamplifier and impedance matching circuit for electromagnetic acoustic transducer A preamplification and impedance matching circuit for an electromagnetic acoustic transducer includes an impedance matching section of the circuit having input terminals for receiving radio frequency power from a radio frequency power source. A matching t... | 04/30/1996 |
| 5488866 | Time-interleaved method for efficient operation of an acoustic wave sensor array A time-interleaved method for efficient operation of an acoustic wave sensor array couples each sensor repetitively and one at a time via a digitally-addressable analog switch, or multiplexer, to a single oscillator driver to form an oscillation circuit. ... | 02/06/1996 |
| 5437178 | Controller for ultrasonic sensors An ultrasonic transducer for measuring a property of a material within a defined space has a function of a velocity at which ultrasonic signals travel through the defined space includes a controller. The controller is adapted for coupling to a plurality o... | 08/01/1995 |
| 5341683 | Dynamic rail longitudinal stress measuring system A system and method for dynamically and non-destructively measuring the longitudinal stresses in a rail of a continuous rail track includes an ultrasonic transmitter which transmits coded focused shear pulses through a rail which are subsequently received... | 08/30/1994 |
| 5339691 | Ultrasonic test system An ultrasonic system for determining the quality of concrete under water hout inaccuracies caused by electromagnetic interference from the ultrasonic generator. An ultrasonic generator applies pulses to the concrete. An ultrasonic detector detects the ul... | 08/23/1994 |
| 5269188 | Continuous self test time gate ultrasonic sensor and method A time gate ultrasonic sensor measures a physical property of a material, such as the presence of the material, within a defined space. The sensor includes at least one transducer connected to a support structure and positioned generally adjacent the defi... | 12/14/1993 |
| 5199299 | Ultrasonic unipolar pulse/echo instrument An ultrasonic unipolar pulse/echo instrument uses active switches and a timing and drive circuitry to control electrical energy to a transducer, the discharging of the transducer, and the opening of an electrical pathway to the receiving circuitry for the... | 04/06/1993 |
| 4945767 | Method and system for controlling ultrasonic probe operation To reduce the power consumption of the ultrasonic probe, the number of transducers to be driven at any given time is controlled. More specifically, all transducers are driven, whereby the probe transmits the ultrasonic beams to a subject through an acoust... | 08/07/1990 |
| 4850226 | Interface circuit for use in an echo ranging system An interface circuit for use in connecting a high frequency piezoelectric transducer to an input stage of an echo ranging system is described. The circuit includes first, second and third control transistors which are selectively switched by a state contr... | 07/25/1989 |
| 4799167 | Ultrasonic 64 channel inspection system with multigate/multimode selection software configurability Nondestructive ultrasonic testing systems and methods include data processing capabilities which allow time division multiplexing of several transducer channels by a smaller number of gates for signal processing, and time division multiplexing the outputs... | 01/17/1989 |
| 4721902 | Noise rejection in a sonic transducer A method of time domain noise rejection in a sonic transducer is disclosed in which all signal reception is prevented between application of a periodic electrical pulse and reception of the corresponding electrical signal. An inhibit signal, produced for ... | 01/26/1988 |
