Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8272455 | Methods for forming wellbores in heated formations | Rosalvina Ramona Guimerans | 2012-09-25 |
| 7841425 | Drilling subsurface wellbores with cutting structures | Rosalvina Ramona Guimerans | 2010-11-30 |
| 7362235 | Impedance-matched drilling telemetry system | Randy Allen Normann | 2008-04-22 |
| 6182755 | Bellow seal and anchor | — | 2001-02-06 |
| 5827952 | Method of and apparatus for determining deposition-point temperature | James J. Spates, Stephen J. Martin | 1998-10-27 |
| 5661233 | Acoustic-wave sensor apparatus for analyzing a petroleum-based composition and sensing solidification of constituents therein | James J. Spates, Stephen J. Martin | 1997-08-26 |