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Browse by Category: Main > Communications
Class Information
Number: 181/401
Name: Acoustics > Wave coupling > Earth
Description: Elements or material wherein one of the media is the earth.










Patents under this class:
1 2 3 4

Patent Number Title Of Patent Date Issued
8689930 Seismic vibrator having airwave suppression Apr. 8, 2014
8542556 Directional seismic sensor array Sep. 24, 2013
8170780 Apparatus and method for control of a vehicle May. 1, 2012
7684284 Steering and fixed angle geophone Mar. 23, 2010
6868035 Method and apparatus for coupling seismic sensors to a borehole wall Mar. 15, 2005
6814179 Seismic sensing apparatus and method with high-g shock isolation Nov. 9, 2004
6612397 Shear wave generator Sep. 2, 2003
6584038 Device for receiving seismic waves and method for coupling them with a solid environment Jun. 24, 2003
6536553 Method and apparatus using acoustic sensor for sub-surface object detection and visualization Mar. 25, 2003
6366537 Geophone and method for the study of eleastic wave phenomena Apr. 2, 2002
6288976 Seismic geophone coupling system Sep. 11, 2001
6131695 Mobile sensor for grounds penetrating sonar Oct. 17, 2000
6098516 Liquid gun propellant stimulation Aug. 8, 2000
6065562 System for imparting compressional and shear waves into the earth May. 23, 2000
5802013 Mobile sensor for ground penetrating sonar Sep. 1, 1998
5724307 Method for improving the coupling response of a water-bottom seismic sensor Mar. 3, 1998
5724311 Method and device for the long-term seismic monitoring of an underground area containing fluids Mar. 3, 1998
5554829 Land seismic acoustic source Sep. 10, 1996
5484968 Interference device for discriminating a certain oscillation Jan. 16, 1996
5418335 Synchronized acoustic source May. 23, 1995
5371330 Synchronized acoustic source Dec. 6, 1994
5365491 Marine seismic bottom geophone coupling and anchor Nov. 15, 1994
5360951 Earth reaction seismic source Nov. 1, 1994
5302782 Three-component borehole wall-locking seismic detector Apr. 12, 1994
5253223 Seismic device Oct. 12, 1993
5206840 Geophone implantation system Apr. 27, 1993
5200581 Method of coupling a seimic detector module to the wall of a borehole, and a sonde for implementing the method Apr. 6, 1993
5189262 Advanced motor driven clamped borehole seismic receiver Feb. 23, 1993
5187332 Coupling and recovering seismic detection sensors Feb. 16, 1993
5170018 Method and apparatus for tube-wave suppression Dec. 8, 1992
5142499 Method and apparatus for shallow water seismic operations Aug. 25, 1992
5128906 Deep penetrating shear-wave seismic vibratory source for use in marine environments Jul. 7, 1992
5124956 Geophone with depth sensitive spikes Jun. 23, 1992
5111903 Signal receiving system able to be coupled with the wall of a well or drilling May. 12, 1992
5105391 Method for high-resolution seismic recording using detectors planted at shallow depths Apr. 14, 1992
5080190 Reversible rigid coupling apparatus and method for borehole seismic transducers Jan. 14, 1992
5060751 Pneumatic wall-locking geophone system Oct. 29, 1991
5044460 Downhole seismic exploration device and apparatus Sep. 3, 1991
5044461 Decoupled borehole sensor Sep. 3, 1991
5031718 Method and apparatus for generating seismic energy in transition zones Jul. 16, 1991
5027918 Sidewall locking downhole seismic signal detector Jul. 2, 1991
5018598 Apparatus for generating seismic waves May. 28, 1991
5010531 Three-dimensional geophone Apr. 23, 1991
4987969 Method of coupling a seismic detector module to the wall of a borehole and a sonde for implementing the method Jan. 29, 1991
4979585 Compound suspension linkage Dec. 25, 1990
4967870 Alignment restoration means for use in seismic apparatus Nov. 6, 1990
4960181 Method and device for improving the coefficient of transmission to geological formations of energy created by a well seismic source Oct. 2, 1990
4959818 Apparatus for generating elliptically polarized shear waves Sep. 25, 1990
4953136 Downhole seismic exploration device and apparatus Aug. 28, 1990
4951264 Method of measuring the shear modulus profile of a seabed Aug. 21, 1990

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