Patent International Class: G01V 1/18

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Seismograph system
Inventor: Chen | Patent Number: 7990806

Method for ultrasonic wave transmission and apparatus for ultrasonic wave transmission
Inventor: Okuda | Patent Number: 7821872

High efficiency portable seismograph for measuring seismic tremor
Inventor: Mulargia, et al. | Patent Number: 7800981

Electret condenser microphone and method of producing the same
Inventor: Tsuchiya | Patent Number: 7698793

Steering and fixed angle geophone
Inventor: Al-Jadani | Patent Number: 7684284

Motion transducer
Inventor: Hagedoorn | Patent Number: 7518954

Geophone with mass position sensing
Inventor: Hagedoorn | Patent Number: 7505369

Six-component seismic data acquisition system
Inventor: Menard, et al. | Patent Number: 7474591

System for noise attenuation in marine seismic streamers
Inventor: Tenghamn | Patent Number: 7468932

Near wellbore modeling method and apparatus
Inventor: Edwards, et al. | Patent Number: 7451066

Method and apparatus for the acquisition of seismic movements
Inventor: Schleisiek, et al. | Patent Number: 7406002

Flextensional vibration sensor
Inventor: Crickmore, et al. | Patent Number: 7345953

Method and apparatus for seismic data acquisition
Inventor: Ray, et al. | Patent Number: 7310287

Diamagnetic current response transducer for sensing pressure gradient in a fluid medium
Inventor: Meier | Patent Number: 7295494

Seismic sensors
Inventor: Luc | Patent Number: 7292504

Windshield and sound-barrier for seismic sensors
Inventor: Coney, et al. | Patent Number: 7255196

Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation
Inventor: Dodge, et al. | Patent Number: 7132958

Device for sensing seismic and acoustic vibrations
Inventor: Pakhomov, et al. | Patent Number: 7057974

Seismic sensor
Inventor: Pakhomov, et al. | Patent Number: 7035167

Adaptive filtering apparatus and method for seismic data acquisition
Inventor: Kappius, et al. | Patent Number: 6961283

Sensor design and process
Inventor: Selvakumar, et al. | Patent Number: 6945110

Double-ended geophone
Inventor: Hagedoorn, et al. | Patent Number: 6922374

Highly sensitive cross axis accelerometer
Inventor: Berg, et al. | Patent Number: 6891621

Gel-filled seismic streamer cable
Inventor: Halvorsen, et al. | Patent Number: 6879546

Sensor design and process
Inventor: Selvakumar, et al. | Patent Number: 6871544

Seismic detection
Inventor: Jones | Patent Number: 6816434

Accelerometer with folded beams
Inventor: Selvakumar, et al. | Patent Number: 6805008

Highly sensitive accelerometer
Inventor: Knudsen, et al. | Patent Number: 6789424

Method and apparatus for measuring acceleration using a fiber optic accelerometer
Inventor: Rud, et al. | Patent Number: 6779402

Micro-machined accelerometer
Inventor: Pike, et al. | Patent Number: 6776042

Hydrophone with automatic inhibition in case an adjustable immersion threshold is exceeded
Inventor: Constantinou, et al. | Patent Number: 6754136

Apparatus for microchip laser geo-sensors
Inventor: Ambs, et al. | Patent Number: 6693848

High performance fiber optic accelerometer
Inventor: Tweedy, et al. | Patent Number: 6650418

Method and apparatus for controlling damping and in situ determination of frequency response for high bandwidth force-balance single-coil geophone
Inventor: VanZandt, et al. | Patent Number: 6618325

Integrated ocean bottom towed array for four-component seismic data acquisition
Inventor: He, et al. | Patent Number: 6607050

Hydrophone for use in a downhole tool
Inventor: Birchak, et al. | Patent Number: 6594199

Electrochemical transducer and a method for fabricating the same
Inventor: Abramovich, et al. | Patent Number: 6576103

Highly sensitive accelerometer
Inventor: Knudsen, et al. | Patent Number: 6575033

Electromagnetic actuator equipped with means for adjusting its mobile polar element
Inventor: Guillemin, et al. | Patent Number: 6556114

Pulse sampled optical fiber hydrophone array (U)
Inventor: Green, et al. | Patent Number: 6515939

Static correction method for exploration seismic data using first arrivals of seismic waves
Inventor: Zhou, et al. | Patent Number: 6501703

Hydrophone for use in a downhole tool
Inventor: Birchak, et al. | Patent Number: 6438070

Pressure compensated transducer
Inventor: Spychalski | Patent Number: 6418792

Electrically inclination compensated device for picking up elastic waves
Inventor: Meynier | Patent Number: 6412592

Pressure tolerant transducer
Inventor: Dale, et al. | Patent Number: 6404106

Sonobuoy apparatus
Inventor: Travor | Patent Number: 6400645

Fiber optic seismic sensor
Inventor: Fersht, et al. | Patent Number: 6384919

Method and apparatus for detecting acoustic signals from a plurality of acoustic signal sensors
Inventor: Foreman | Patent Number: 6370083

Seismic sensor having two symmetrical leaf springs and a method for detecting seismic movement
Inventor: Canuteson, et al. | Patent Number: 6363035

Seismic sensor units
Inventor: Orban, et al. | Patent Number: 6353577

Geophone including laser interferometer
Inventor: Langridge, et al. | Patent Number: 6325172

Geophone with optical fiber pressure sensor
Inventor: Luscombe, et al. | Patent Number: 6307809

Methods and apparatuses for seismic prospecting
Inventor: Schmidt | Patent Number: 6307808

Acoustic sensing system for downhole seismic applications utilizing an array of fiber optic sensors
Inventor: Frederick, et al. | Patent Number: 6288975

Place calibration of sonar receive array
Inventor: Skinner | Patent Number: 6208584

Acceleration sensor with ring-shaped movable electrode
Inventor: Kano, et al. | Patent Number: 6199430

Fiber optic geophone
Inventor: Erath | Patent Number: 6161433

Towed array hydrophone
Inventor: Cole | Patent Number: 6160763

Optical sensor
Inventor: Luscombe, et al. | Patent Number: 6160762

Under-ice surveillance buoy
Inventor: Travor, et al. | Patent Number: 6134183

Acoustic sensor and array thereof
Inventor: Pearce | Patent Number: 6108274

Single-coil force balance velocity geophone
Inventor: VanZandt, et al. | Patent Number: 6075754

Interpenetration apparatus for meausurement of underground blasting vibration
Inventor: Song | Patent Number: 6062085

Miniaturized accelerometer of the type using spring compensation of the effect of gravity and its production process
Inventor: Brun, et al. | Patent Number: 6029517

Differential hydrophone assembly
Inventor: Woodall | Patent Number: 6029113

Seismometer
Inventor: Eguchi | Patent Number: 5996416

Method of conducting drilling operations using vertical seismic profiles
Inventor: Meyer, et al. | Patent Number: 5995446

Clamping mechanism for inertial pendulum instruments
Inventor: Guralp, et al. | Patent Number: 5983699

Clamping mechanism for inertial pendulum instruments
Inventor: Guralp, et al. | Patent Number: 5983699

Acoustic sensor and array thereof
Inventor: Pearce | Patent Number: 5982708

Method and apparatus for installing electronic equipment below soft earth surface layer
Inventor: Havig | Patent Number: 5979588

Seismic acquisition system and method utilizing buried geophones
Inventor: Whitener | Patent Number: 5978317

Nulling loop configuration for an electrically insulating cantilever magnetometer
Inventor: Chaparala | Patent Number: 5977767

DIFAR sensor
Inventor: Delany, et al. | Patent Number: 5949742

Method of monitoring a mineral reservoir
Inventor: Havig | Patent Number: 5947199

Microelectromechanical cantilever acoustic sensor
Inventor: Naughton | Patent Number: 5925822

Electrically insulating cantilever magnetometer with mutually isolated and integrated thermometry, background elimination and null detection
Inventor: Naughton, et al. | Patent Number: 5923166

Method and apparatus for installing electronic equipment below soft earth surface layer
Inventor: Havig | Patent Number: 5892733

Vibration detector
Inventor: Laurent | Patent Number: 5889731

Repairable waterproof geophone housing
Inventor: McNeel, et al. | Patent Number: 5878001

Method for installing electronic equipment below soft earth surface
Inventor: Havig | Patent Number: 5860483

Force sensor device
Inventor: Kvisteroy, et al. | Patent Number: 5834646

Rubber composition and process for producing thereof
Inventor: Kawazura, et al. | Patent Number: 5834552

Laboratory test method to measure towed array hydrophone response
Inventor: Hull | Patent Number: 5808965

Acoustic sensor
Inventor: Beresford, et al. | Patent Number: 5798488

Hydrophone module for a marine seismic cable
Inventor: Chang, et al. | Patent Number: 5796676

Acoustic sensor and array thereof
Inventor: Pearce, et al. | Patent Number: 5774423

Geophone normalization process
Inventor: Hall, et al. | Patent Number: 5774415

Marsh case
Inventor: Cheema | Patent Number: 5757729

Electrically insulating cantilever magnetometer with mutually isolated and integrated thermometry, background elimination and null detection
Inventor: Naughton, et al. | Patent Number: 5739686

Omnidirectional ultrasonic microprobe hydrophone
Inventor: Moffett, et al. | Patent Number: 5724315

Floating mass accelerometer
Inventor: Twigg, et al. | Patent Number: 5646349

Preloaded linear beam vibration sensor
Inventor: Cahill, et al. | Patent Number: 5644086

Acoustic transducer
Inventor: Chang, et al. | Patent Number: 5642332

Earthquake detector
Inventor: Szasz | Patent Number: 5633463

Fiber optic hydrophone having rigid mandrel
Inventor: Frederick, et al. | Patent Number: 5625724

Field-replaceable socket for seismic connector
Inventor: Becker | Patent Number: 5624288

Surface seismic profile system and method using vertical sensor
Inventor: Moldoveanu, et al. | Patent Number: 5581514

Magnetic suspension seismometer
Inventor: Biglari, et al. | Patent Number: 5565665

Magnetic suspension seismometer
Inventor: Biglari, et al. | Patent Number: 5565665

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