Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5329999 | Annular safety system | Lewis D. Proctor | 1994-07-19 |
| 5305828 | Combination packer/safety valve assembly for gas storage wells | Robert W. Crow | 1994-04-26 |
| 5146994 | Packing assembly for use with reeled tubing and method of operating and removing same | Charles W. Pleasants, Ronald J. Fischer, Robert D. Harrison, Jr., John R. Setterberg, Jr. | 1992-09-15 |
| 5141053 | Compact dual packer with locking dogs | Henry L. Restarick | 1992-08-25 |
| 5086839 | Well packer | John R. Setterberg, Jr. | 1992-02-11 |
| 5000265 | Packing assembly for use with reeled tubing and method of operating and removing same | Charles W. Pleasants, Ronald J. Fischer, Robert D. Harrison, Jr., John R. Setterberg, Jr. | 1991-03-19 |
| 4844154 | Well packer | Colby M. Ross | 1989-07-04 |
| 4834175 | Hydraulic versa-trieve packer | Colby M. Ross | 1989-05-30 |
| 4378838 | Pipe wipers and cups therefor | James D. Ogden | 1983-04-05 |
| 4311194 | Liner hanger and running and setting tool | — | 1982-01-19 |
| 4296807 | Crossover tool | James D. Hendrickson | 1981-10-27 |
| 4270608 | Method and apparatus for gravel packing multiple zones | James D. Hendrickson, Odie R. S. Davis, Nolan M. Workman, Eugene E. Baker, David D. Szarka | 1981-06-02 |
| 4249601 | Hydraulic running tool for liner hangers | — | 1981-02-10 |