| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 367014000 |
SEISMIC PROSPECTING
| 1671 |
| 367087000 |
ECHO SYSTEMS
| 463 |
| 367140000 |
SIGNAL TRANSDUCERS
| 359 |
| 367007000 |
ACOUSTIC IMAGE CONVERSION
| 263 |
| 367118000 |
DISTANCE OR DIRECTION FINDING
| 255 |
| 367137000 |
TRANSMITTER SYSTEMS
| 144 |
| 367081000 |
WELLBORE TELEMETERING
| 140 |
| 367197000 |
SELECTIVE (E.G., REMOTE CONTROL)
| 78 |
| 367131000 |
UNDERWATER SYSTEM
| 78 |
| 367013000 |
TESTING, MONITORING, OR CALIBRATING
| 67 |
| 367135000 |
RECEIVER CIRCUITRY
| 64 |
| 367117000 |
PLURAL TRANSMITTERS TO RECEIVER OR TRANSMITTER TO PLURAL RECEIVERS
| 36 |
| 367002000 |
TRANSPONDERS
| 23 |
| 367086000 |
BOREHOLE TESTING
| 13 |
| 367001000 |
SONAR COUNTER-MEASURES | 4 |
| 20110002191 | Active sonar apparatuses and methods - An active sonar detection system may include a transmitter, which may project into the transmissive medium signals of any frequency, amplitude or phase using one or more transducers. A transmit beamformer to provide transmission directionality may also be included. Generated transmit waveforms may have different temporal and frequency spectra that are adapted for different purposes. Such purposes may include, individually or in combination: detection of stationary or moving objects and surfaces and the ability to describe, classify and/or localize them; the ability to interrogate the environment for its reverberation and propagation features and/or to discern fronts and eddies; the ability to mislead third parties and their apparatuses either by making the transmitted signal unobtrusive, or provide for stealth operations by making the signals appear to be radiating from a source other than the one from which the signals are actually radiating, or by giving the signals or an object, such as a submarine, the appearance of having a purpose other than that for which they are actually intended. | 01-06-2011 |
| 20130088936 | SONAR TORPEDO COUNTERMEASURE - Described herein are countermeasure techniques (both active and passive). The techniques employ a plurality of devices that can be launched to different locations. The plurality of devices at the different locations, each including a sonar transmitter and receiver, can act in concert to emulate a target of a torpedo. The emulated target contains the necessary characteristics of a legitimate target to deceive the torpedo. | 04-11-2013 |
| 20140126322 | ACOUSTICALLY TRANSPARENT AND ACOUSTIC WAVE STEERING MATERIALS FOR ACOUSTIC CLOAKING AND METHODS OF FABRICATION THEREOF - Disclosed an acoustically transparent material including an acoustic wave steering material, and methods for fabrication and use thereof. The materials are specially designed structures of homogenous isotropic metals. These structures are constructed to propagate waves according to Pentamode elastic theory. The metamaterial structures are two-dimensional, intended to propagate acoustic waves in the plane in a manner which closely emulates the propagation of waves in water. The acoustically transparent materials described herein have particular utility as acoustic wave steering materials and acoustic cloaks. | 05-08-2014 |
| 20140369160 | ACTIVE CLOAKING WITH WIDEBAND TRANSDUCERS - Electro-mechanical transducers are used to actively cloak a targeted object in a way that absorbs incoming waves without reflection, sends them out the opposite side of the target and returns the wave without leaving a shadow behind the target. The present invention pertains to an improvement in the cloaking of an object without requiring the use of special materials for the object itself and allows the use of SONAR and other possible transducer systems that would be covered and rendered ineffective with passive cloaking materials. Other means are also provided for extending the bandwidth as well as increasing the efficiency for cloaking or other transducers. | 12-18-2014 |
| 367012000 |
BEAM STABILIZATION OR COMPENSATION | 3 |
| 20100080080 | PROCEDURE FOR ELIMINATING GHOST SOURCES FROM PASSIVE SONAR COMPRISING SEVERAL LINEAR ANTENNAS - This invention concerns the field of passive sonar systems simultaneously processing several linear antennas. This invention includes a method to eliminate ghost sources for a passive sonar having at least two linear antennas A and B, the method including: An initial acquisition step during which the signal received is measured at different moments t | 04-01-2010 |
| 20160011304 | COMPENSATION FOR DEPTH FINDERS | 01-14-2016 |
| 20160154133 | SYSTEMS AND METHODS OF PROVIDING COMPENSATED GEOLOGICAL MEASUREMENTS | 06-02-2016 |
| 367191000 |
MISCELLANEOUS | 3 |
| 20090303840 | METHOD FOR REMOVING MICRO-DEBRIS AND DEVICE OF THE SAME - The present invention provides a method for removing micro-debris generated in a laser machining process operated on machined object and device of the same. The machined object is placed on a movable machining platform within a machining range and machined at a particular machining location. By disposing an acoustic wave generator and a reflector part, or by disposing a plurality of acoustic wave generators, at least two standing waves extending across the machining range and two standing wave nodes are generated. The micro-debris generated from the laser machining process is moved away by the standing waves to concentrate at the standing wave nodes, and subsequently removed from the standing wave nodes. | 12-10-2009 |
| 20100080086 | ACOUSTIC FINGERPRINTING OF MECHANICAL DEVICES - A method and device are presented for identifying machines, such as vehicles, based on acoustic machine signatures. An acoustic sensor generates machine-acoustic data about the machine. A machine-signature identifier receives the machine-acoustic data, determines a machine signature from the machine-acoustic data, and identifies the machine based on the machine signature. A machine-signature database, configured to store multiple machine signatures and/or machine-signature templates, may receive and process queries about machine signatures for machine identification. The machine-signature identifier may generate and send an instruction based on the identified machine. The instruction may instruct application of electronic countermeasures or may permit a vehicle to enter a secured area. An acoustic modulator may generate the machine-acoustic data to act as a machine signature. The acoustic modulator may generate the machine signature using an ultrasonic carrier. | 04-01-2010 |
| 20140112107 | METHODS AND DEVICES FOR GENERATING HIGH-AMPLITUDE AND HIGH-FREQUENCY FOCUSED ULTRASOUND WITH LIGHT-ABSORBING MATERIALS - A high-frequency light-generated focused ultrasound (LGFU) device is provided. The device has a source of light energy, such as a laser, and an optoacoustic lens comprising a concave composite layer with a plurality of light absorbing particles that absorbs laser energy, e.g., carbon nanotubes, and a polymeric material that rapidly expands upon exposure to heat, e.g., polydimethylsiloxane. The laser energy is directed to the optoacoustic lens and thus can generate high-frequency (e.g., ≧10 MHz) and high-amplitude pressure output (e.g., ≧10 MPa) focused ultrasound. The disclosure also provides methods of making such new arcuate optoacoustic lenses, as well as methods for generating and using the high-frequency and high-amplitude ultrasound, including for surgery, like lithotripsy and ablation. | 04-24-2014 |
