Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8646529 | Method and system for treating a subterranean formation using diversion | William Ernest Clark, Doug Bentley, John Daniels, Christopher N. Fredd, John Lassek | 2014-02-11 |
| 8220543 | Method and system for treating a subterranean formation using diversion | William Ernest Clark, Doug Bentley, John Daniels, Christopher N. Fredd, John Lassek | 2012-07-17 |
| 7934556 | Method and system for treating a subterranean formation using diversion | William Ernest Clark, Doug Bentley, John Daniels, Christopher N. Fredd, John Lassek | 2011-05-03 |
| 6680451 | Method and apparatus for electrically charging and separating particles | — | 2004-01-20 |
| 6072140 | Method and apparatus for electrically charging and separating particles | — | 2000-06-06 |