Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10876620 | Vacuum driven hydraulic balance system | Robert Parrish, James D. Hendrickson | 2020-12-29 |
| 10160060 | Crack and fracture resistant weld joint and welding process | Huaxin Li, Nieyuan Hai | 2018-12-25 |
| 9988955 | Dry sump system warm up strategy | Robert Parrish, Arthur L. McGrew, Jr. | 2018-06-05 |
| 8671901 | Excess demand voltage relief spark plug for vehicle ignition system | Ronald M. Wozniak | 2014-03-18 |
| 8495984 | Spark voltage limiting system for active fuel management | Robert W. Riegel, Ronald M. Wozniak, Anthony L. Marks | 2013-07-30 |
| 8473185 | System and method for detecting engine oil aeration and starvation based on engine vibration | Alan S. Miller, Robert W. Riegel | 2013-06-25 |
| 8099231 | System and method for detecting fuel injector malfunction based on engine vibration | — | 2012-01-17 |