Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6378609 | Universal washdown system for gravel packing and fracturing | Dean S. Oneal, Kevin C. Serrette, Ervin Charlie Becker, III | 2002-04-30 |
| 5641023 | Shifting tool for a subterranean completion structure | Colby M. Ross, Ronnie D. Finley | 1997-06-24 |
| 5413180 | One trip backwash/sand control system with extendable washpipe isolation | Colby M. Ross, Henry L. Restarick, Ralph H. Echols, Phillip T. Thomas | 1995-05-09 |
| 5404955 | Releasable running tool for setting well tool | Ralph H. Echols, Tommy Frank Grigsby | 1995-04-11 |
| 5343949 | Isolation washpipe for earth well completions and method for use in gravel packing a well | Colby M. Ross, Timothy F. LaBruyere | 1994-09-06 |
| 5343953 | Through-tubing recirculating tool assembly for well completions | Tommy Frank Grigsby | 1994-09-06 |
| 4671354 | Well packer | William David Henderson, Dennis D. Rood, Richard M. Sproul | 1987-06-09 |
| 4441553 | Anchor for use in a well | John R. Setterberg, Jr. | 1984-04-10 |
| 4438811 | Latch for use in a well | — | 1984-03-27 |
| 4420041 | Method of using a valve in gravel packing | — | 1983-12-13 |
| 4378842 | Valve | — | 1983-04-05 |
| 4378847 | Valve | Robert B. Wheeler | 1983-04-05 |