Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470971 | Tubing head control and pressure monitor device | — | 2002-10-29 |
| 6401827 | Tubing hanger running tool | Bobby L. Ferguson, Jose A. Alvarado, Eugene Borak, Vicki Corso | 2002-06-11 |
| 6244359 | Subsea diverter and rotating drilling head | Glen H. Cuiper, L. Steven Landriault, Noel A. Monjure | 2001-06-12 |
| 6186237 | Annulus check valve with tubing plug back-up | Robert K. Voss | 2001-02-13 |
| 6142235 | Bottom-supported guidance device for alignment of multiple wellbores in a single conductor | Noel A. Monjure | 2000-11-07 |
| 5944111 | Internal riser tensioning system | — | 1999-08-31 |
| 5918675 | Close proximity wellheads | Eugene Borak | 1999-07-06 |
| 5810086 | Single riser with two wellheads | — | 1998-09-22 |
| 5732772 | Dual split tubing hanger | Eugene Borak | 1998-03-31 |
| 5671812 | Hydraulic pressure assisted casing tensioning system | — | 1997-09-30 |
| 5341885 | Internal tubing hanger lockdown | — | 1994-08-30 |
| 5287922 | Emergency method for running slips over casing collars | — | 1994-02-22 |
| 5255746 | Adjustable mandrel hanger assembly | — | 1993-10-26 |
| 5222555 | Emergency casing hanger system | — | 1993-06-29 |
| 5205356 | Well starter head | Lawrence A. Eckert, Dale Brian Marietta | 1993-04-27 |
| 5135266 | Casing slips and seal member | Henry Lang | 1992-08-04 |
| 5094297 | Casing weight set seal ring | — | 1992-03-10 |
| 4911480 | Torque nut for setting a graphite seal | Anton J. Dach, Jr. | 1990-03-27 |
| 4911245 | Metal seal with soft inlays | Frank C. Adamek, Anton J. Dach, Jr. | 1990-03-27 |
| 4834177 | Unidirectional filter for hydraulic systems | Kenneth J. Hartwein | 1989-05-30 |
| 4771832 | Wellhead with eccentric casing seal ring | — | 1988-09-20 |
| 4770250 | Hydraulically actuated lock pin for well pipe hanger | Robert Kevin Law | 1988-09-13 |
| 4709933 | Temperature transient resistant seal | Frank C. Adamek | 1987-12-01 |
| 4607691 | Non-orienting, multiple ported, cylindrical pressure transfer device | — | 1986-08-26 |
| 4556076 | Fire resistant valve | — | 1985-12-03 |