Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12416218 | Behind casing cementing tool | Lars Hovda, James C. Stevens, Praveen Gonuguntla | 2025-09-16 |
| 12196062 | Behind casing wash and cement | Rick D. Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Brett Borland +2 more | 2025-01-14 |
| 12152461 | Through tubing P AND A with bismuth alloys | Geir Ove Titlestad, David D. Hearn, Curtis G. Blount, Rick D. Watts, Randall S. Shafer +1 more | 2024-11-26 |
| 12139997 | Behind casing wash and cement | Lars Hovda, James C. Stevens, Amal Phadke, Praveen Gonuguntla | 2024-11-12 |
| 12129735 | Tool for metal plugging or sealing of casing | David D. Hearn, Casey Hirschmann, Randall S. Shafer, Stewart M. Robertson | 2024-10-29 |
| 12123279 | Setting a cement plug | Lars Hovda, James C. Stevens, Amal Phadke | 2024-10-22 |
| 11879305 | Behind casing cementing tool | Lars Hovda, James C. Stevens, Amal Phadke, Praveen Gonuguntla | 2024-01-23 |
| 11686175 | Behind casing wash and cement | Lars Hovda, James C. Stevens, Amal Phadke, Praveen Gonuguntla | 2023-06-27 |
| 11608718 | Behind casing wash and cement | Rick D. Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Brett Borland +2 more | 2023-03-21 |
| 11441384 | Tool for metal plugging or sealing of casing | David D. Hearn, Casey Hirschmann, Randall S. Shafer, Stewart M. Robertson | 2022-09-13 |
| 11377925 | Through tubing P and A with bismuth alloys | Geir Ove Titlestad, David D. Hearn, Curtis G. Blount, Rick D. Watts, Randall S. Shafer +1 more | 2022-07-05 |
| 11136862 | Behind casing wash and cement | Rick D. Watts, Stein Haavardstein, Lars Hovda, James C. Stevens, Brett Borland +2 more | 2021-10-05 |
| 10760374 | Tool for metal plugging or sealing of casing | David D. Hearn, Casey Hirschmann, Randall S. Shafer, Stewart M. Robertson | 2020-09-01 |
| 9914514 | Subsea vessel and use | Scott E. Coblitz, Amal Phadke, Derrick Laskowski, Daniel R. Givan, George Z. Gu | 2018-03-13 |
| 7743674 | High temperature fluid test instrument | Virgilio G. Boncan | 2010-06-29 |
| 7647970 | Self-sealing well cement composition | Harold Dean Brannon, Windell Scott Bray | 2010-01-19 |
| 7156173 | Cement compositions useful in oil and gas wells | — | 2007-01-02 |
| 6508305 | Compositions and methods for cementing using elastic particles | Harold Dean Brannon, Christopher John Stephenson, Robert Dillenbeck | 2003-01-21 |
| 6235809 | Multi-functional additive for use in well cementing | Gino F. Dilullo Arias, Phillip J. Rae | 2001-05-22 |
| 6230804 | Stress resistant cement compositions and methods for using same | Virgilio G. Boncan, Jimmy P. Dickerson | 2001-05-15 |
| 6145591 | Method and compositions for use in cementing | Virgilio G. Boncan, Murray Rogers, Windall Bray | 2000-11-14 |
| 5975220 | Mud suspension control system | Daniel J. Daulton, Phillip J. Rae, Neil Johnston, Gino DiLullo | 1999-11-02 |
| 5421409 | Slag-based well cementing compositions and methods | Jimmy P. Dickerson | 1995-06-06 |