Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11401892 | Turbine pump assembly with turbine exhaust cooled heat exchanger for active hydraulic oil | Richard A. Himmelmann | 2022-08-02 |
| 6561520 | Hydrodynamic rotary coupling seal | Manmohan S. Kalsi, Lannie Dietle, John E. Schroeder | 2003-05-13 |
| 6315302 | Skew resisting hydrodynamic seal | Lannie L. Dietle, Jeffrey D. Gobeli, Manmohan S. Kalsi | 2001-11-13 |
| 5823541 | Rod seal cartridge for progressing cavity artificial lift pumps | Lannie L. Dietle | 1998-10-20 |
| 5678829 | Hydrodynamically lubricated rotary shaft seal with environmental side groove | Manmohan S. Kalsi | 1997-10-21 |