Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8490717 | Downhole magnetic measurement while rotating and methods of use | Neil W. Smith Bergstrom, Matthew A. White | 2013-07-23 |
| 6816788 | Inertially-stabilized magnetometer measuring apparatus for use in a borehole rotary environment | Donald H. Van Steenwyk, Hans S. Fairchild | 2004-11-09 |
| 6698516 | Method for magnetizing wellbore tubulars | Donald H. Van Steenwyk | 2004-03-02 |
| 6651496 | Inertially-stabilized magnetometer measuring apparatus for use in a borehole rotary environment | Donald H. Van Steenwyk, Hans S. Fairchild | 2003-11-25 |
| 6530154 | Method to detect deviations from a wellplan while drilling in the presence of magnetic interference | — | 2003-03-11 |
| 6396276 | Apparatus and method for electric field telemetry employing component upper and lower housings in a well pipestring | Donald H. Van Steenwyk, Timothy M. Price | 2002-05-28 |
| 6188223 | Electric field borehole telemetry | Donald H. Van Steenwyk, Timothy M. Price | 2001-02-13 |
| 5960370 | Method to determine local variations of the earth's magnetic field and location of the source thereof | Donald H. Van Steenwyk | 1999-09-28 |
| 5883516 | Apparatus and method for electric field telemetry employing component upper and lower housings in a well pipestring | Donald H. Van Steenwyk, Timothy M. Price | 1999-03-16 |
| 4949725 | Apparatus and method for displaying electrical activity generated within a living body | Gil Raviv, Ivan Pal, Dean Koester, David Kripal | 1990-08-21 |