Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11021671 | Bearing flushing compositions and methods | Mark Eggen, Paul Erdek | 2021-06-01 |
| 10738804 | Varnish mitigation process | Daniel M. Oehler, Douglas James Muennich | 2020-08-11 |
| 9719535 | Varnish mitigation process | Daniel M. Oehler, Douglas James Muennich | 2017-08-01 |
| 7199595 | Fluid quality control using broad spectrum impedance spectroscopy | Richard W. Hirthe, Martin A. Seitz | 2007-04-03 |
| 7078910 | Fluid formulation evaluation and improvement utilizing broad spectrum impedance spectroscopy | Richard W. Hirthe, Jianxun Hu, Charles Koehler, Martin A. Seitz, David R. Sosnowski +2 more | 2006-07-18 |
| 7049831 | Fluid quality control using broad spectrum impedance spectroscopy | Richard W. Hirthe, Martin A. Seitz | 2006-05-23 |
| 7043372 | Fluid condition monitoring using broad spectrum impedance spectroscopy | Charles Koehler, David R. Sosnowski, Richard W. Hirthe | 2006-05-09 |
| 5026493 | Reduced ash content lubricants | William Y. Lam | 1991-06-25 |