| Patent Number |
Title Of Patent |
Date Issued |
| 7398078 |
Method and apparatus for security in a wireless network |
July 8, 2008 |
| The present invention relates to an apparatus and method for preventing unauthorized users from gaining access to a wireless network. A processor allows only data transmissions from the directions of the authorized users to access the network. Data transmissions from other directions are |
| 6969844 |
Multiple-axis linearly-propelled rotating sensor apparatus |
November 29, 2005 |
| A ground penetrating antenna apparatus and method are provided for locating underground objects via radar, sonar, or similar methods. The apparatus includes one or more antennas that are rotatably affixed to support extensions that also rotate, but about an axis that is different from ea |
| 6949930 |
Time domain induction method and apparatus for locating buried objects in a medium by inducing a |
September 27, 2005 |
| A method and apparatus locates buried objects in conductive soil by creating a direct current in a transmitting loop, periodically terminating the direct current in the transmitting loop to create an eddy current in the conductive soil using time domain induction, receiving a magnetic |
| 6766253 |
Method for merging position information with measurements and filtering to obtain high-quality i |
July 20, 2004 |
| An apparatus and method for combining a survey measurement dataset and a position dataset into a single dataset containing both measurement and position data is disclosed. The survey measurement data may be obtained from a ground penetrating radar, an inductometer, a magnetometer, or an |
| 6700381 |
Method and apparatus for locating objects using parametric inversion |
March 2, 2004 |
| An apparatus for locating a target object using parametric inversion employs a signal injector capable of injecting a signal into the target object, wherein at least a portion of the target object is buried, a magnetic field receiver, a matching processor for matching to a magnetic f |
| 6667709 |
Method and apparatus for detecting leaks in buried pipes by using a selected combination of geop |
December 23, 2003 |
| A method and apparatus for detecting and locating leaks in buried pipes is disclosed in which ground penetrating radar, induction, acoustic, and vacuum excavation systems are selected based on soil conditions and then employed in selected combinations. The conductivity and wave speed of |
| 6388629 |
Rotating scanning antenna apparatus and method for locating buried objects |
May 14, 2002 |
| A ground penetrating antenna apparatus and method are provided for locating underground objects via radar, sonar, or similar methods. The apparatus includes one or more antennas that are rotatably affixed to support extensions that also rotate, but about an axis that is different from ea |
| 4870580 |
Compressional/shear wave separation in vertical seismic profiling |
September 26, 1989 |
| Disclosed is separation of the compressional and shear components of the wavefield measured in 3-component vertical seismic profiling. The separation involves working in the zx plane defined by the borehole axis (z) and the surface seismic source space therefrom along the x-axis, and |
| 4648039 |
Compressional/shear wave separation in vertical seismic profiling |
March 3, 1987 |
| Disclosed is separation of the compressional and shear components of the wavefield measured in 3-component vertical seismic profiling. The separation involves working in the zx plane defined by the borehole axis (z) and the surface seismic source, and in successive and overlapping wi |
