Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10161316 | Engine bypass valve | Daniel Bernard Kupratis, Walter A. Ledwith, Jr. | 2018-12-25 |
| 10119477 | Gas turbine engine with a multi-spool driven fan | Daniel Bernard Kupratis, Walter A. Ledwith, Jr. | 2018-11-06 |
| 9951721 | Three-stream gas turbine engine architecture | Daniel Bernard Kupratis, Walter A. Ledwith, Jr. | 2018-04-24 |