Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7584619 | System for reducing oil consumption in gas turbine engines | Mark Eden Zentgraf | 2009-09-08 |
| 7426834 | “Get home” oil supply and scavenge system | Mark Eden Zentgraf | 2008-09-23 |
| 6470666 | Methods and systems for preventing gas turbine engine lube oil leakage | James C. Przytulski, Frederic Gardner Haaser, Awtar Singh Khera | 2002-10-29 |