Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8077053 | Method and apparatus for sensing a borehole characteristic | M. Clark Thompson, Koby Byron Carlson, Don M. Coates, Brian C. Llewellyn | 2011-12-13 |
| 7963333 | Controlling the pressure within an annular volume of a wellbore | Robert E. Hermes, Brian C. Llewellyn, James B. Bloys, Don M. Coates | 2011-06-21 |
| 7950460 | Controlling the pressure within an annular volume of a wellbore | Robert E. Hermes, Brian C. Llewellyn, James B. Bloys, Don M. Coates | 2011-05-31 |
| 7870905 | Controlling the pressure within an annular volume of a wellbore | Robert E. Hermes, Brian C. Llewellyn, James B. Bloys | 2011-01-18 |