Issued Patents All Time
Showing 25 most recent of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10031257 | Environmental monitoring of logging-while-drilling tool components | Thomas A. Springer, Derek Crocker | 2018-07-24 |
| 9417335 | Shock mounted sensor package with thermal isolation | Robert Neves | 2016-08-16 |
| 9225114 | Radial electrical connector resistant to fluids | — | 2015-12-29 |
| 9188695 | Azimuthally sensitive resistivity logging tool | Joseph K. Clontz | 2015-11-17 |
| 9040926 | Rugged scintillation crystal assembly | — | 2015-05-26 |
| 8838389 | Polar display for use with drilling tools | Thomas A. Springer, Joseph K. Clontz | 2014-09-16 |
| 8759749 | Directional radiation detection tool | Christopher A. Schnoor | 2014-06-24 |
| 8120361 | Azimuthally sensitive resistivity logging tool | Joseph K. Clontz | 2012-02-21 |
| 7657377 | Azimuthal measurement-while-drilling (MWD) tool | Thomas A. Springer | 2010-02-02 |
| 6961663 | Borehole compensation system and method for a resistivity logging tool | Tom Springer | 2005-11-01 |
| 6765385 | Method, apparatus and system for compensating the effects of borehole variations | Tom Springer | 2004-07-20 |
| 6727707 | Method and apparatus for a downhole antenna | Joseph K. Clontz | 2004-04-27 |
| 6603312 | Multi-frequency array induction tool | — | 2003-08-05 |
| 6100696 | Method and apparatus for directional measurement of subsurface electrical properties | — | 2000-08-08 |
| 6084403 | Slim-hole collar locator and casing inspection tool with high-strength pressure housing | Joseph K. Clontz | 2000-07-04 |
| 6064210 | Retrievable resistivity logging system for use in measurement while drilling | — | 2000-05-16 |
| 5661402 | Sealed modular downhole antenna | Dennis Patrick Chesnutt, Kenneth H. Hamlin | 1997-08-26 |
| 5548219 | Digital two frequency generator for use in borehole heterodyne measurement systems | — | 1996-08-20 |
| 5453693 | Logging system for measuring dielectric properties of fluids in a cased well using multiple mini-wave guides | Shey-Min Su, Stanley C. Gianzero | 1995-09-26 |
| 5448171 | Method for variable radial depth induction log | Roland E. Chemali | 1995-09-05 |
| 5428293 | Logging while drilling apparatus with multiple depth of resistivity investigation | Shey-Min Su, Roland E. Chemali | 1995-06-27 |
| 5359195 | Gas hold up tool for use in cased well boreholes | Michael Gärtner, Christopher A. Schnoor | 1994-10-25 |
| 5233522 | Multifrequency dielectric logging tool including antenna system responsive to invaded rock formations | — | 1993-08-03 |
| 5146167 | Method and apparatus for determining the conductivity of subsurface earth formations by filtering and summing in-phase and quadrature conductivity signals with correction values | Robert W. Strickland | 1992-09-08 |
| 5132903 | Dielectric measuring apparatus for determining oil and water mixtures in a well borehole | — | 1992-07-21 |