Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10295692 | Fracture detection and localization using acoustic reflections | Dustin Cavin, Carl A. Robbins, Ralph M. D'Angelo | 2019-05-21 |
| 10126454 | Method and system for fracture detection using acoustic waves | Ralph M. D'Angelo, Christoph Klieber, Mikhail Lemarenko | 2018-11-13 |
| 8611183 | Measuring standoff and borehole geometry | Lawrence E. McGowan, Ralph M. D'Angelo | 2013-12-17 |
| 7095676 | Assessing a solids deposit in an oilfield pipe | Ralph M. D'Angelo, David Johnson, Gale Gustavson, Oliver C. Mullins | 2006-08-22 |
| 6678616 | Method and tool for producing a formation velocity image data set | Ralph M. D'Angelo | 2004-01-13 |
| 6510389 | Acoustic detection of stress-induced mechanical damage in a borehole wall | Thomas J. Plona, Bikash K. Sinha, Ralph M. D'Angelo, Lawrence E. McGowan | 2003-01-21 |
| 5619475 | Method of predicting mechanical failure in formation utilizing stress derivatives which measure formation nonlinearity | — | 1997-04-08 |
| 5544127 | Borehole apparatus and methods for measuring formation velocities as a function of azimuth, and interpretation thereof | — | 1996-08-06 |
| 5521882 | Measurement of formation characteristics using acoustic borehole tool having sources of different frequencies | Ralph M. D'Angelo, Christopher Kimball, Sergio Kostek, Thomas J. Plona | 1996-05-28 |