Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8576661 | Device and method for imaging of non-linear and linear properties of formations surrounding a borehole | Paul A. Johnson, Pierre-Yves Le Bas, Robert Guyer, Cung Vu, Christopher Skelt | 2013-11-05 |
| 8553495 | Device and method for imaging of non-linear and linear properties of formations surrounding a borehole | Paul A. Johnson, Pierre-Yves Le Bas, Robert Guyer, Cung Vu, Christopher Skelt | 2013-10-08 |
| 8345509 | System and method to create three-dimensional images of non-linear acoustic properties in a region remote from a borehole | Cung Vu, Kurt Nihei, Denis P. Schmitt, Christopher Skelt, Paul A. Johnson +2 more | 2013-01-01 |
| 8289808 | System and method to estimate compressional to shear velocity (VP/VS) ratio in a region remote from a borehole | Cung Vu, Kurt Nihei, Denis P. Schmitt, Christopher Skelt, Paul A. Johnson +2 more | 2012-10-16 |
| 6330827 | Resonant nonlinear ultrasound spectroscopy | Paul A. Johnson, Robert Guyer, Koen Van Den Abeele | 2001-12-18 |