Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10683868 | Bushing anti-rotation system and apparatus | Wesley John Nowitzki, Joshua Wayne Webster, Randy S. Roberts, Joseph Dean Butler, Thomas John Gottschalk | 2020-06-16 |
| 10473106 | Apparatus and system for sealing submersible pump assemblies | Larry J. Parmeter, Brett D. Leamy, David Lunk, Keith Leon Johnson, Thomas John Gottschalk +1 more | 2019-11-12 |
| 10374542 | Electric submersible pump variable speed drive controller | Tom G. Yohanan, Ryan Bridwell Ashbaugh | 2019-08-06 |
| 10036398 | Apparatus and system for a thrust-absorbing horizontal surface pump assembly | Brent David St. John, Ryan Michael Nicholson, David Lunk, Larry J. Parmeter, Brett D. Leamy +2 more | 2018-07-31 |
| 9998054 | Electric submersible pump variable speed drive controller | Tom G. Yohanan, Ryan Bridwell Ashbaugh | 2018-06-12 |
| 9932806 | Apparatus, system and method for reducing gas to liquid ratios in submersible pump applications | Joseph Stewart, Wesley John Nowitzki | 2018-04-03 |
| 9829001 | Electric submersible pump assembly bearing | Shiv Jayaram, Thomas John Gottschalk, Wesley John Nowitzki | 2017-11-28 |
| 9534603 | Apparatus and system for a thrust-absorbing horizontal surface pump assembly | Brent David St. John, Ryan Michael Nicholson, David Lunk, Larry J. Parmeter, Brett D. Leamy +2 more | 2017-01-03 |
| 9531230 | Motor bearing for electric submersible motors | Larry J. Parmeter, Brett D. Leamy, Randy S. Roberts, Gregory Austin Davis | 2016-12-27 |
| 9325216 | Motor bearing for electric submersible motors | Larry J. Parmeter, Brett D. Leamy, Randy S. Roberts, Gregory Austin Davis | 2016-04-26 |
| 9200642 | Abrasive handling submersible pump assembly diffuser | Wesley John Nowitzki, Gregory Austin Davis, Steven Andrew Lovell | 2015-12-01 |
| 9169848 | Apparatus and system for sealing submersible pump assemblies | Larry J. Parmeter, Brett D. Leamy, David Lunk, Keith Leon Johnson, Thomas John Gottschalk | 2015-10-27 |
| 9046354 | Apparatus, system and method for measuring straightness of components of rotating assemblies | Thomas John Gottschalk | 2015-06-02 |
| 9039356 | Abrasive handling submersible pump assembly diffuser | Wesley John Nowitzki, Gregory Austin Davis, Steven Andrew Lovell | 2015-05-26 |
| 9017043 | Apparatus and system for sealing submersible pump assemblies | Larry J. Parmeter, Brett D. Leamy, David Lunk, Keith Leon Johnson, Thomas John Gottschalk | 2015-04-28 |
| 5996713 | Rolling cutter bit with improved rotational stabilization | Rudolf Carl Pessier, Matthew R. Isbell, Mohammad Swadi, Danny E. Scott | 1999-12-07 |