Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6547007 | PDF valve | Henry E. Rogers | 2003-04-15 |
| 6497291 | Float valve assembly and method | — | 2002-12-24 |
| 6318472 | Hydraulic set liner hanger setting mechanism and method | Henry E. Rogers, Charles Butterfield | 2001-11-20 |
| 6244342 | Reverse-cementing method and apparatus | Bobby L. Sullaway | 2001-06-12 |
| 6095247 | Apparatus and method for opening perforations in a well casing | Steven G. Streich, Mike Navarette, Jimmie D. Weaver, Richard L. Giroux | 2000-08-01 |
| 5762139 | Subsurface release cementing plug apparatus and methods | Bobby L. Sullaway, David F. Laurel, George L. Morgan | 1998-06-09 |
| 5738171 | Well cementing inflation packer tools and methods | — | 1998-04-14 |
| 5526878 | Stage cementer with integral inflation packer | Alan B. Duell | 1996-06-18 |
| 5494103 | Well jetting apparatus | Jim B. Surjaatmadja, Steven L. Holden | 1996-02-27 |
| 5394941 | Fracture oriented completion tool system | James J. Venditto, Lee W. Stepp | 1995-03-07 |
| 5381862 | Coiled tubing operated full opening completion tool system | Lee W. Stepp | 1995-01-17 |
| 5375661 | Well completion method | Abbas Ali Daneshy | 1994-12-27 |
| 5364110 | Downhole tool metal-to-metal seal | Steven G. Streich, John T. Brandell, Bobby L. Sullaway | 1994-11-15 |
| 5361856 | Well jetting apparatus and met of modifying a well therewith | Jim B. Surjaatmadja, Steven L. Holden | 1994-11-08 |
| 5325917 | Short stroke casing valve with positioning and jetting tools therefor | — | 1994-07-05 |
| 5246236 | Seal for long-time exposures in oil and gas well tools | Allen E. Harris | 1993-09-21 |
| 5137087 | Casing cementer with torque-limiting rotating positioning tool | Richard L. Giroux, Joseph B. Crump | 1992-08-11 |
| 5029644 | Jetting tool | Steven L. Schwegman | 1991-07-09 |
| 4991654 | Casing valve | John T. Brandell, Bob L. Sullaway | 1991-02-12 |
| 4979561 | Positioning tool | — | 1990-12-25 |
| 4949788 | Well completions using casing valves | Bob L. Sullaway, John T. Brandell, Steven L. Schwegman | 1990-08-21 |
| 4917184 | Cement head and plug | T. Austin Freeman, Morris G. Baldridge, Darrell Fontenot | 1990-04-17 |
| 4718495 | Surface packer and method for using the same | Eric P. Lubitz, Ernest E. Carter, Jr., Robert L. Jessup | 1988-01-12 |
| 4697640 | Apparatus for setting a high temperature packer | — | 1987-10-06 |
| 4669538 | Double-grip thermal expansion screen hanger and running tool | — | 1987-06-02 |