Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5316084 | Well tool with sealing means | Robert Coon, Mark E. Hopmann, Ronald D. Williams, Steve Jennings, Timothy R. Tips | 1994-05-31 |
| 5156220 | Well tool with sealing means | Richard L. Forehand, Mark E. Hopmann, Ronald D. Williams | 1992-10-20 |
| 4967841 | Horizontal well circulation tool | — | 1990-11-06 |
| 4949791 | Method and apparatus for securing and releasing continuous tubing in a subterranean well | Mark E. Hopmann, Scott C. Strattan | 1990-08-21 |
| 4928770 | Mechanical manipulation tool with hydraulic hammer | — | 1990-05-29 |
| 4917191 | Method and apparatus for selectively shifting a tool member | Mark E. Hopmann, Scott C. Strattan | 1990-04-17 |
| D277629 | Support bracket for a golf buggy seat | — | 1985-02-19 |
| 4258826 | Combination stepladder and load lifting apparatus | — | 1981-03-31 |