SEARCH:      Monitor Keywords |  Custom RSS

Communications, electrical: acoustic wave systems and devices August inventions list 08/09

20090213690 - Composite transducer for downhole ultrasonic imaging and caliper measurement: A transducer assembly for downhole imaging includes a 1-3 Piezoelectric composite transducer of high Q ceramic rods in a polymer matrix. The assembly also includes a Teflon® window, a fluid-filled cavity adjacent to the window, and impedance matching material between the composite transducer and the fluid. The transducer is positioned... Agent: Madan & Sriram, P.c.

20090213689 - Ultrasonic logging methods and apparatus for automatically calibrating measures of acoustic impedance of cement and other materials behind casing: Methods and apparatus for in situ, continuous, automatic, and real-time acoustic impedance calibration of a transducer in an acoustic logging system. By taking the frequency characteristics of the ultrasonic transducer which are present in the internal casing reflection and convolving them with the frequency characteristics of the casing being logged,... Agent: Wong, Cabello, Lutsch, Rutherford & Brucculeri, L.l.p.

20090213691 - Source signature deconvolution method: A method of filtering seismic signals is described using the steps of obtaining the seismic signals generated by activating a seismic source and recording signals emanating from the source at one or more receivers; defining a source signature deconvolution filter to filter the seismic signal, wherein the filter is scaled... Agent: Schlumberger-doll Research Attn: Intellectual Property Law Department

20090213692 - Method for three dimensional seismic travel time tomography in transversely isotropic media: A method for estimating seismic velocities in vertically transversely isotropic media includes generating an initial estimate of vertical interval velocity and interval normal moveout velocity with respect to depth from seismic data. An initial estimate is generated of a first anisotropy parameter with respect to depth. The first anisotropy parameter... Agent: E. Eugene Thigpen Petroleum Geo-services, Inc.

20090213693 - Using a wave propagator for transversely isotropic media: A technique includes modeling a seismic wavefield in a vertical transversely isotropic media as a second order derivative of a first wavefield function with respect to a vertical direction and not with respect to crossline and inline directions and as second order derivatives of a second wave field function with... Agent: Westerngeco L.l.c. Jeffrey E. Griffin

20090213694 - Method and device for detecting the surface character of objects in road traffic or of persons: A method for detecting the surface character of objects in road traffic or of persons, especially pedestrians, vehicles, obstacles and the like, in which signals are emitted from a vehicle that are reflected by a person or an object, and in which the reflected signals are received and evaluated in... Agent: Kenyon & Kenyon LLP

20090213695 - Volumetric passive sonobuoy array of polyvinylidene fluoride (pvdf) wires: A sonar system for detecting underwater acoustic signals includes a plurality of hydrophone units capable of converting acoustic impulses to electrical signals, the hydrophone units being substantially vertically oriented when deployed in a body of water, and the hydrophone units occupying at least some of the positions of an M×N... Agent: The Johns Hopkins Universityapplied Physics Labora Office Of Patent Counsel

20090213696 - Echo detection: An echo detection circuit that detects an echo by detecting the magnitude of a digitally mixed representation of the received acoustic signal and reference sine and cosine signals. That magnitude is then compared against an echo threshold to verify the presence or absence of an echo signal. A low pass... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090213697 - Wireless communication system, transmitting device, receiving device and information processing apparatus: A wireless communication system includes a transmitting device and a receiving device, in which the transmitting device generates a signal including information and transmits the signal by electromagnetic waves and ultrasonic waves in the same frequency in parallel, and in which the receiving device extracts the signal from at least... Agent: Oliff & Berridge, Plc

20090207693 - Seismic location and communication system: A method and system for determining the location of miners trapped in an underground mine that includes recording a reference seismic signature for each of a plurality of underground base stations in the mine in advance of an emergency. The reference seismic signatures are created by generating first a seismic... Agent: Thorpe North & Western, LLP.

20090207694 - Ultrasonic in-building positioning system based on phase difference array with ranging: A method for determining position of a mobile electronic device includes emitting an acoustic pulse from the position of the mobile electronic device. The acoustic pulse is detected at a known position at three spaced apart locations along each of at least two lines extending in different directions. The range... Agent: Richard A. Fagin

20090207695 - Method for production of an antenna section for an underwater antenna: The invention relates to a method for production of an antenna section comprising a hydrophone (12) for a submarine antenna which may be composed of several antenna sections, whereby the hydrophones are arranged in a row one behind the other in a rectangular cavity (20) at a separation from each... Agent: Fitch, Even, Tabin & Flannery

20090207696 - Hybrid transducer: An embodiment of the invention is directed to a hybrid geometry type acoustic transducer. A hybrid geometry type acoustic transducer as embodied herein leverages different type transducer physical configurations. More specifically, embodiments of the hybrid transducer combine specific features of traditional Tonpilz resonators and PZT-composite transducers to exploit the beneficial... Agent: Bond, Schoeneck & King, PLLC

20090207698 - Vertical line hydrophone array: A hydrophone assembly includes at least four hydrophone units for converting an acoustic signal to an electrical signal, the hydrophone units being in a parallel, cylindrically symmetric spaced spatial relationship with each other, and at least one spacer element to maintain the hydrophone units fixed in the spatial relationship to... Agent: The Johns Hopkins Universityapplied Physics Labora Office Of Patent Counsel

20090207697 - Water inflatable volumetric hydrophone array: A hydrophone array includes an inflatable shaped housing enclosing an interior space and formable between a collapsed configuration and an expanded configuration, a framework of compliant material disposed within the interior of the inflatable housing, and a plurality of hydrophones attached to the compliant material at respective positions, wherein said... Agent: The Johns Hopkins Universityapplied Physics Labora Office Of Patent Counsel

20090201763 - Airborne laser-acoustic mine detection system: A system and method is provided for using acoustical pulses generated from an airborne laser source to locate objects under water. An array of acoustic sensors, such as passive sonobuoys at the ocean surface, is deployed in known or determinable locations by aircraft. Each area surrounded by acoustic sensors comprises... Agent: Naval Research Laboratory Associate Counsel (patents)

20090201764 - Down hole mud sound speed measurement by using acoustic sensors with differentiated standoff: A method for determining a velocity of sound traveling in a fluid in a borehole, the method including: placing a logging instrument in the borehole, the instrument including a first acoustic transducer and a second acoustic transducer that are offset from each other in distance to a wall of the... Agent: Cantor Colburn, LLP

20090201765 - System and method for position determination of objects: A method and a system for detection and position determination of chips, which transmit ultrasound signals in a room. The system comprises electronic identification chips, which are attached to objects that have to be monitored. Each chip is equipped with a transmitter and a receiver. The signals are received by... Agent: O''shea Getz P.C.

20090201766 - Underwater detector: The present disclosure provides an underwater detector including a power source for applying a predetermined voltage, a voltage control circuit for controlling the voltage based on a control signal, a gate signal generating module for outputting a gate signal, a switching circuit for outputting a reference signal based on the... Agent: Birch Stewart Kolasch & Birch

20090201763 - Airborne laser-acoustic mine detection system: A system and method is provided for using acoustical pulses generated from an airborne laser source to locate objects under water. An array of acoustic sensors, such as passive sonobuoys at the ocean surface, is deployed in known or determinable locations by aircraft. Each area surrounded by acoustic sensors comprises... Agent: Naval Research Laboratory Associate Counsel (patents)

20090201764 - Down hole mud sound speed measurement by using acoustic sensors with differentiated standoff: A method for determining a velocity of sound traveling in a fluid in a borehole, the method including: placing a logging instrument in the borehole, the instrument including a first acoustic transducer and a second acoustic transducer that are offset from each other in distance to a wall of the... Agent: Cantor Colburn, LLP

20090201765 - System and method for position determination of objects: A method and a system for detection and position determination of chips, which transmit ultrasound signals in a room. The system comprises electronic identification chips, which are attached to objects that have to be monitored. Each chip is equipped with a transmitter and a receiver. The signals are received by... Agent: O''shea Getz P.C.

20090201766 - Underwater detector: The present disclosure provides an underwater detector including a power source for applying a predetermined voltage, a voltage control circuit for controlling the voltage based on a control signal, a gate signal generating module for outputting a gate signal, a switching circuit for outputting a reference signal based on the... Agent: Birch Stewart Kolasch & Birch

20090196120 - Downhole measurements of mud acoustic velocity: One or more acoustic transducers are used to measure ultrasonic velocities in the mud in the interior channel of a drill collar. Corrections may be applied for temperature and/or fine grain drill cuttings to get the ultrasonic velocity in the annulus between the drill collar and the borehole wall. The... Agent: Madan & Sriram, P.C.

20090196121 - Ultrasound sensor, in particular, a motor vehicle ultrasound sensor: Ultrasound sensor (2), in particular motor vehicle ultrasound sensor, having a housing (4), having a diaphragm (6) which is mounted in or on a section (12) of the housing (4), and having a decoupling element (10) which extends at least partially between the diaphragm (6) and the housing section (12),... Agent: Osha Liang L.L.P.

20090196122 - Underwater acoustic positioning system and method: A method for determining the position of an underwater device includes placement of a plurality of station keeping devices on or below the surface of the water in known positions. A device to locate is provided for placement below the surface of the water, and the device to locate and... Agent: Nutter Mcclennen & Fish LLP