Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5529123 | Method for controlling fluid loss from wells into high conductivity earth formations | Robert B. Carpenter | 1996-06-25 |
| 5117909 | Well conduit sealant and placement method | J. Benjamin Bloys, Roger D. Bradshaw, Kenneth R. Riggs | 1992-06-02 |
| 5113943 | Spacer fluids | William N. Wilson, Roger D. Bradshaw, Robert B. Carpenter | 1992-05-19 |
| 5065820 | Control of lost circulation in wells | James B. Bloys | 1991-11-19 |
| 5030366 | Spacer fluids | William N. Wilson, Roger D. Bradshaw, Robert B. Carpenter | 1991-07-09 |