Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11352838 | Low friction and high wear resistant sucker rod string | Fritz C. Grensing, Diane M. Nielsen, William D. Nielsen, Richard E. Cash | 2022-06-07 |
| 11174688 | Sucker rod guides | Fritz C. Grensing, Michael J. Gedeon, Diane M. Nielsen, William D. Nielsen | 2021-11-16 |
| 10844671 | Low friction and high wear resistant sucker rod string | Fritz C. Grensing, Diane M. Nielsen, William D. Nielsen, Richard E. Cash | 2020-11-24 |
| 10648067 | Precipitation strengthened metal alloy article | W. Raymond Cribb | 2020-05-12 |
| 10597949 | Drilling component | William D. Nielsen, Diane M. Nielsen, Fritz C. Grensing | 2020-03-24 |