Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE39583 | Multiple well tool control systems in a multi-valve well testing system having automatic control modes | — | 2007-04-24 |
| 5058673 | Hydraulically set packer useful with independently set straddle packers including an inflate/deflate valve and a hydraulic ratchet associated with the straddle packers | Laurent E. Muller, Ervin Randermann, Jr. | 1991-10-22 |
| 5050675 | Perforating and testing apparatus including a microprocessor implemented control system responsive to an output from an inductive coupler or other input stimulus | — | 1991-09-24 |
| 4971160 | Perforating and testing apparatus including a microprocessor implemented control system responsive to an output from an inductive coupler or other input stimulus | — | 1990-11-20 |
| 4923010 | Mud solids immune clean fluid compensating system | Dinesh R. Patel | 1990-05-08 |
| 4915168 | Multiple well tool control systems in a multi-valve well testing system | — | 1990-04-10 |
| 4896722 | Multiple well tool control systems in a multi-valve well testing system having automatic control modes | — | 1990-01-30 |
| 4856595 | Well tool control system and method | — | 1989-08-15 |
| 4796699 | Well tool control system and method | — | 1989-01-10 |
| 4633945 | Permanent completion tubing conveyed perforating system | — | 1987-01-06 |
| 4609005 | Tubing isolation disc valve | — | 1986-09-02 |
| 4576234 | Full bore sampler valve | — | 1986-03-18 |
| 4560000 | Pressure-activated well perforating apparatus | — | 1985-12-24 |
| 4553598 | Full bore sampler valve apparatus | Dale Meek | 1985-11-19 |
| 4553428 | Drill stem testing apparatus with multiple pressure sensing ports | — | 1985-11-19 |
| 4509604 | Pressure responsive perforating and testing system | — | 1985-04-09 |
| 4474242 | Annulus pressure controlled reversing valve | — | 1984-10-02 |
| 4403659 | Pressure controlled reversing valve | — | 1983-09-13 |
| 4320800 | Inflatable packer drill stem testing system | — | 1982-03-23 |