Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6652243 | Method and apparatus for filling a storage vessel with compressed gas | — | 2003-11-25 |
| 6439278 | Compressed natural gas dispensing system | — | 2002-08-27 |
| 5970786 | Method for measuring compressed natural gas | Robert S. Smith | 1999-10-26 |
| 5884675 | Cascade system for fueling compressed natural gas | — | 1999-03-23 |
| 5787920 | Tank for compressed gas | — | 1998-08-04 |
| 5410924 | Shear gripping apparatus and method | — | 1995-05-02 |
| 5275246 | Drill string bridge coupler and actuator | — | 1994-01-04 |
| 5265683 | Floor drive drilling system | — | 1993-11-30 |
| 5125148 | Drill string torque coupling and method for making up and breaking out drill string connections | — | 1992-06-30 |
| 4875529 | Alternate forms of, side drive drilling | Stephen B. Wetch, Gregory A. Goris | 1989-10-24 |
| 4830121 | Break-out joint with selective disabler | John Moses | 1989-05-16 |
| 4795128 | Gate type kelly cock valve | Henry D. Calk, Jr., Taylor L. Jones, Billy L. McDougal | 1989-01-03 |
| 4793422 | Articulated elevator links for top drive drill rig | — | 1988-12-27 |
| 4791997 | Pipe handling apparatus and method | — | 1988-12-20 |
| 4730806 | Gate valve | — | 1988-03-15 |
| 4658915 | Easy break-out tool joint and method | Gregg A. Goris | 1987-04-21 |
| 4640384 | Emergency evacuation system for high-rise buildings | Alexander Kucher, Yury Bromberg | 1987-02-03 |
| 4535852 | Drill string valve actuator | George I. Boyadjieff | 1985-08-20 |
| 4529045 | Top drive drilling unit with rotatable pipe support | George I. Boyadjieff | 1985-07-16 |
| 4389760 | Well slip unit | — | 1983-06-28 |
| 4253219 | Well slip assembly | — | 1981-03-03 |