Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5455780 | Method of tracking material in a well | Philip D. Nguyen, Gary A. Woodbridge | 1995-10-03 |
| 5195824 | Vessel agitator for early hydration of concentrated liquid gelling agent | James L. Stromberg, Dennis Brown, Donald E. Bailey | 1993-03-23 |
| 5026168 | Slurry mixing apparatus | Leslie N. Berryman, Herbert J. Horinek, Max L. Phillippi, David A. Prucha, Stanley V. Stephenson | 1991-06-25 |
| 4989987 | Slurry mixing apparatus | Leslie N. Berryman, Herbert J. Horinek, Max L. Phillippi, David A. Prucha, Stanley V. Stephenson | 1991-02-05 |
| 4951262 | Agitator and baffles for slurry mixing | Max L. Phillippi | 1990-08-21 |
| 4930576 | Slurry mixing apparatus | Leslie N. Berryman, Herbert J. Horinek, Max L. Phillippi, David A. Prucha, Stanley V. Stephenson | 1990-06-05 |
| 4730676 | Downhole foam generator | Thomas J. Luers | 1988-03-15 |
| 4627495 | Method for stimulation of wells with carbon dioxide or nitrogen based fluids containing high proppant concentrations | Phillip C. Harris, Pat T. Chisholm | 1986-12-09 |