Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470968 | Independently retrievable subsea tree and tubing hanger system | — | 2002-10-29 |
| 6164663 | Bidirectional metal to metal seal | — | 2000-12-26 |
| 5997003 | Annular sealing assembly and methods of sealing | — | 1999-12-07 |
| 5620052 | Hanger suspension system | — | 1997-04-15 |
| 5542475 | Blanking plug assembly | Danny K. Wolff | 1996-08-06 |
| 5482082 | Multi-passage fluid coupling and metal seal therefor | Danny K. Wolff | 1996-01-09 |
| 5377762 | Bore selector | — | 1995-01-03 |
| 5335729 | Tubular connection, method for making same, and tool therefor | Charles E. Gibbs | 1994-08-09 |
| 4648448 | Packer assembly | Lawrence Sanford, Charles O. Stokley | 1987-03-10 |
| 4469180 | Well fluid pressure balanced operator for subsurface safety valve | — | 1984-09-04 |
| 4287954 | Subsurface safety valve | William Krause | 1981-09-08 |