Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6777940 | Apparatus and method for resistivity well logging | — | 2004-08-17 |
| 6157893 | Modified formation testing apparatus and method | Per-Erik Berger | 2000-12-05 |
| 6047239 | Formation testing apparatus and method | Per-Erik Berger, Nils Reimers | 2000-04-04 |
| 5803186 | Formation isolation and testing apparatus and method | Per-Erik Berger, Nils Reimers | 1998-09-08 |
| 5432446 | Borehole measurement of NMR characteristics of earth formation | Jason P. MacInnis, Christopher E. Morriss, Richard W. Oldigs, John Edward Smaardyk, Joseph M. Steiner, Jr. | 1995-07-11 |
| 4965522 | Multifrequency signal transmitter with attenuation of selected harmonies for an array induction well logging apparatus | Gary A. Hazen | 1990-10-23 |