Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4714889 | Method of interpreting impedance distribution of an earth formation using precursor logging data provided by a multi-electrode logging array stationary within a borehole | Jorg A. Angehrn | 1987-12-22 |
| 4703279 | Method of interpreting impedance distribution of an earth formation penetrated by a borehole using precursor data provided by a moving logging array having a single continuously emitting current electrode and a multiplicity of potential electrodes | Jorg A. Angehrn | 1987-10-27 |
| 4677385 | Methd of logging an earth formation penetrated by a borehole to provide an estimate of impedance distribution with depth using end emitting current electrodes sequentially activated and a multiplicity of potential electrodes of a moving logging array | Jorg A. Angehrn | 1987-06-30 |
| 4677386 | Method of interpreting impedance distribution of an earth formation obtained by a moving array using end emitting current electrodes sequentially activated and a series of potential electrodes | Jorg A. Angehrn | 1987-06-30 |
| 4675610 | Method of logging an earth formation penetrated by a borehole to provide an improved estimate of impedance distribution with depth using a single continuously emitting current electrode and a multiplicity of potential electrodes of a moving logging array | Jorg A. Angehrn | 1987-06-23 |
| 4675611 | Method of logging an earth formation penetrated by a borehole to provide an improved estimate of impedance distribution of the formation | Jorg A. Angehrn | 1987-06-23 |