Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8455404 | Treatment fluids with improved shale inhibition and methods of use in subterranean operations | Elaine Harrower, Arthur Youngson | 2013-06-04 |
| 7833945 | Treatment fluids with improved shale inhibition and methods of use in subterranean operations | Elaine Harrower, Arthur Youngson | 2010-11-16 |
| 7786049 | Drilling fluids with improved shale inhibition and methods of drilling in subterranean formations | Arthur Youngson | 2010-08-31 |
| 7087554 | Drilling fluids with improved shale inhibition and methods of drilling in subterranean formations | Arthur Youngson | 2006-08-08 |
| 6989353 | Method for reducing sag in drilling, completion and workover fluids | Andrew Paterson, Christopher Duncan Leith | 2006-01-24 |
| 6861393 | Method for reducing sag in drilling, completion and workover fluids | Andrew Paterson, Christopher Duncan Leith | 2005-03-01 |