Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6252656 | Apparatus and method of seismic sensing systems using fiber optics | Alan D. Kersey, Robert J. Maron | 2001-06-26 |
| 6227114 | Select trigger and detonation system using an optical fiber | Alan D. Kersey, Arthur D. Hay, James Dunphy | 2001-05-08 |
| 6218841 | Method and apparatus for determining dip angle, and horizontal and vertical conductivities using multi frequency measurments and a model | — | 2001-04-17 |
| 6137621 | Acoustic logging system using fiber optics | — | 2000-10-24 |
| 6092024 | Method and apparatus for determining resistivity and dielectric anisotropy parameters of earth formations by using multifrequency and/or multispacing measurements | — | 2000-07-18 |
| 6081116 | Nuclear magnetic resonance apparatus and method for geological applications | Macmillan M. Wisler | 2000-06-27 |
| 5986749 | Fiber optic sensing system | Arthur D. Hay, Alan D. Kersey | 1999-11-16 |
| 5869968 | Method and apparatus for avoiding mutual coupling between receivers in measurement while drilling | Andrew Brooks, MacMillian M. Wisler, Larry W. Thompson, Wallace H. Meyer, John W. Harrell | 1999-02-09 |
| RE35386 | Method for drilling directional wells | Macmillan M. Wisler | 1996-12-03 |
| 5491488 | Electromagnetic propagation tool using magnetic dipole antennas | — | 1996-02-13 |
| 5438267 | Single-switching method of eliminating the effect of electromagnetic coupling between a pair of receivers | — | 1995-08-01 |
| 5331331 | Electromagnetic propagation tool using dipole antennas | — | 1994-07-19 |