Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8281797 | Control valve having live loaded packing follower with leak-off and independent secondary seal | — | 2012-10-09 |
| 7955021 | Collets for use with valves | Benjamin Uriah Good | 2011-06-07 |
| 7484710 | Fluid flow control valve with high temperature bi-directional shutoff | David John Koester, Sarah Lynn Dvorak, Lynn Mahncke, Brandon Wayne Bell | 2009-02-03 |
| 5593166 | Low friction packing | Michel K. Lovell, Randall S. Jackson | 1997-01-14 |
| 5299812 | Graphite packing | Ronnald J. Funk, William C. Scheffert, Wilbur Dean Hutchens, Virgil W. Pepper, Frank E. Jensen | 1994-04-05 |
| 4519579 | Cam valve self-centering seat | Dale L. Meyer | 1985-05-28 |