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, Ernest C. Onyia, 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, Ernest C. Onyia, David W. Bell, Robert J. Lankston | 2004-06-15 |
| 6473696 | Method and process for prediction of subsurface fluid and rock pressures in the earth | Ernest C. Onyia, David W. Bell, Alan Royce Huffman | 2002-10-29 |
| 4495292 | Determination of expandable clay minerals at well sites | Robert M. Siebert | 1985-01-22 |