Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5544704 | Drillable whipstock | David F. Laurel, James F. Heathman | 1996-08-13 |
| 5488994 | Inflation packer method and apparatus | David F. Laurel, James F. Heathman | 1996-02-06 |
| 5368103 | Method of setting a balanced cement plug in a borehole | James F. Heathman, Robert B. Carpenter, Anthony M. Badalamenti, Robert R. Siffert, Charles J. Rimer | 1994-11-29 |