Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12228011 | Convertible valve for use in a subterranean well | — | 2025-02-18 |
| 10774613 | Tieback cementing plug system | Douglas Brian Farley | 2020-09-15 |
| 9797220 | Tieback cementing plug system | Douglas Brian Farley | 2017-10-24 |
| 7730965 | Retractable joint and cementing shoe for use in completing a wellbore | John Christopher Jordan, James G. Martens, R. Lee Colvard, Brent J. Lirette, Gregory G. Galloway +2 more | 2010-06-08 |