Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12018557 | Gravel pack quality measurement | John Alasdair Cameron | 2024-06-25 |
| 9273545 | Use of Lamb and SH attenuations to estimate cement Vp and Vs in cased borehole | Douglas J. Patterson, Edward Domangue | 2016-03-01 |
| 8880348 | Radon migration of acoustic data | Xiao Ming Tang, Douglas J. Patterson, Vladimir Dubinsky, Zarema Dubinsky | 2014-11-04 |
| 8061206 | Casing thickness evaluation method | Edward Domangue, Douglas J. Patterson, Joseph Gregory Barolak | 2011-11-22 |
| 7911877 | Active noise cancellation through the use of magnetic coupling | Douglas J. Patterson, Xiao Ming Tang | 2011-03-22 |
| 7787327 | Cement bond analysis | Xiao Ming Tang, Edward Domangue | 2010-08-31 |
| 7773454 | Method and apparatus for cement evaluation using multiple acoustic wave types | Joseph Gregory Barolak, Douglas J. Patterson, Vladimir Dubinsky, Xiao Ming Tang | 2010-08-10 |
| 7681450 | Casing resonant radial flexural modes in cement bond evaluation | Vladimir Dubinsky, Xiao Ming Tang, Douglas J. Patterson, Dimitri Donskoy, Joseph Gregory Barolak | 2010-03-23 |
| 7663969 | Use of Lamb waves in cement bond logging | Xiao Ming Tang, Joseph Gregory Barolak, Douglas J. Patterson, Vladimir Dubinsky, Ron Alers +1 more | 2010-02-16 |
| 7639562 | Active noise cancellation through the use of magnetic coupling | Douglas J. Patterson, Xiao Ming Tang | 2009-12-29 |
| 7525872 | Method and apparatus for cement bond evaluation using transversely polarized shear waves | Xiao Ming Tang, Tsili Wang, Douglas J. Patterson | 2009-04-28 |
| 7150317 | Use of electromagnetic acoustic transducers in downhole cement evaluation | Joseph Gregory Barolak, Vladimir Dubinsky, Douglas J. Patterson | 2006-12-19 |
| 7032707 | Acoustic isolator downhole applications | Sergey Egerev, Vladimir Belov, Vladimir Dubinsky, Victor Tiutekin, Victor Yushin | 2006-04-25 |
| 7028806 | Acoustic isolator for downhole applications | Vladimir Dubinsky | 2006-04-18 |
| 6915875 | Acoustic isolator for downhole applications | Vladimir Dubinsky | 2005-07-12 |
| 6769497 | Use of axial accelerometer for estimation of instantaneous ROP downhole for LWD and wireline applications | Vladimir Dubinsky, Pushkar N. Jogi, James V. Leggett, III, Douglas J. Patterson, Volker Krueger | 2004-08-03 |
| 6615949 | Acoustic isolator for downhole applications | Sergey Egerev, Vladimir Belov, Vladimir Dubinsky, Victor Tiutekin, Victor Yushin | 2003-09-09 |
| 6023443 | Semblance processing for an acoustic measurement-while-drilling system for imaging of formation boundaries | Vladimir Dubinsky, James V. Leggett, III | 2000-02-08 |