Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6977866 | Method and process for prediction of subsurface fluid and rock pressures in the earth | Alan Royce Huffman, Richard Lahann, David W. Bell, Robert J. Lankston | 2005-12-20 |
| 6751558 | Method and process for prediction of subsurface fluid and rock pressures in the earth | Alan Royce Huffman, Richard Lahann, David W. Bell, Robert J. Lankston | 2004-06-15 |
| 6473696 | Method and process for prediction of subsurface fluid and rock pressures in the earth | David W. Bell, Alan Royce Huffman, Richard Lahann | 2002-10-29 |
| 4914591 | Method of determining rock compressive strength | Tommy M. Warren, Warren J. Winters | 1990-04-03 |