Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9505040 | Pipeline debris shearing device | William J. Rankin, Matthew W. Logan | 2016-11-29 |
| 9089884 | Pipeline debris shearing device | William J. Rankin, Matthew W. Logan | 2015-07-28 |
| 8650694 | Speed regulated pipeline pig | Rick D. Pruett, Eric N. Freeman, Charles Culver Gidden Cooper, Scott Douglas Nelson, Mark Russell Henault | 2014-02-18 |
| 8151483 | Progressive dewatering and inhibitor dispersal rolling pig | Charles Culver Gidden Cooper, Mark Russell Henault, Eric N. Freeman | 2012-04-10 |
| 8052801 | Pipeline pig launch pin and retraction system | Eric N. Freeman, Charles Culver Gidden Cooper, Scott Douglas Nelson, Mark Russell Henault | 2011-11-08 |