Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8611183 | Measuring standoff and borehole geometry | Kenneth W. Winkler, Ralph M. D'Angelo | 2013-12-17 |
| 6510389 | Acoustic detection of stress-induced mechanical damage in a borehole wall | Kenneth W. Winkler, Thomas J. Plona, Bikash K. Sinha, Ralph M. D'Angelo | 2003-01-21 |
| 6465775 | Method of detecting carbon dioxide in a downhole environment | Oliver C. Mullins, Philip Rabbito, Toru Terabayashi, Kazuyoshi Kegasawa | 2002-10-15 |