Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10752824 | Hydrolytically degradable composition | Xuan Fu | 2020-08-25 |
| 7108058 | Packing assembly for rotary drilling swivels and pumps having rotating shafts | — | 2006-09-19 |
| 6675699 | Composite components for use in pumps | — | 2004-01-13 |
| 6485024 | Split mechanical face seal | John I. Nunn, II | 2002-11-26 |
| 6230610 | Pump liner | — | 2001-05-15 |
| 5499826 | Anti-extrusion lip seal | Aaron J. Pippert | 1996-03-19 |
| 5480163 | Lip seal with reinforced backup | Hank T. Miser, John Thomas Rogers | 1996-01-02 |
| 5284084 | Light weight piston | John Thomas Rogers | 1994-02-08 |
| 5275204 | Valve element | John Thomas Rogers | 1994-01-04 |
| 4991857 | Stuffing box assembly | — | 1991-02-12 |
| 4219204 | Anti-extrusion seals and packings | — | 1980-08-26 |