Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6803347 | Additive for wellbore fluids | Hemant K. Ladva, Paul R. Howard | 2004-10-12 |
| 6787505 | Electrically conductive non-aqueous wellbore fluids | Geoffrey Maitland, Mostafa Ahmadi Tehrani | 2004-09-07 |
| 6770603 | Electrically conductive non-aqueous wellbore fluids | Mostafa Ahmadi Tehrani, Paul Ryan Craddock, Anthony Lawson | 2004-08-03 |
| 6710019 | Wellbore fluid | David Antony Ballard | 2004-03-23 |