| 9994332 | Engine assembly with direct drive of generator | Jun 07, 17 | Jun 12, 18 | Pratt & Whitney Canada Corp. |
| 9970294 | Shockwave rotor detonation (omni-engine, ubiquitous X engine) multipurpose engine | Jul 08, 13 | May 15, 18 | Not available |
| 9970295 | Engine assembly with turbine support casing | Jan 29, 16 | May 15, 18 | Pratt & Whitney Canada Corp. |
| 9957885 | Internal combustion engine with common rail pilot and main injection | Sep 18, 17 | May 01, 18 | Pratt & Whitney Canada Corp. |
| 9932892 | Compound engine assembly with coaxial compressor and offset turbine section | Jul 23, 15 | Apr 03, 18 | Pratt & Whitney Canada Corp. |
| 9926843 | Compound cycle engine | Jun 16, 15 | Mar 27, 18 | PRATT & WHITNEY CANADA CORP. |
| 9926842 | Rotary internal combustion engine with exhaust purge | Nov 21, 14 | Mar 27, 18 | Pratt & Whitney Canada Corp. |
| 9896990 | Internal combustion engine with port communication | Jun 20, 17 | Feb 20, 18 | PRATT & WHITNEY CANADA CORP. |
| 9896934 | Rotary engine with rotor land | Dec 17, 13 | Feb 20, 18 | PRATT & WHITNEY CANADA CORP. |
| 9896998 | Compound engine assembly with modulated flow | Jul 23, 15 | Feb 20, 18 | PRATT & WHITNEY CANADA CORP. |
| 9879591 | Engine intake assembly with selector valve | Jul 23, 15 | Jan 30, 18 | PRATT & WHITNEY CANADA CORP. |
| 9869240 | Compound engine assembly with cantilevered compressor and turbine | Sep 24, 15 | Jan 16, 18 | PRATT & WHITNEY CANADA CORP. |
| 9856789 | Compound cycle engine | Nov 18, 15 | Jan 02, 18 | PRATT & WHITNEY CANADA CORP. |
| 9850758 | Apex and face seals with rotary internal combustion engine | Jan 27, 15 | Dec 26, 17 | PRATT & WHITNEY CANADA CORP. |
| 9828906 | Rotary internal combustion engine with variable volumetric compression ratio | Nov 29, 16 | Nov 28, 17 | PRATT & WHITNEY CANADA CORP. |
| 9810068 | Rotary engine with cam-guided rotor | May 20, 16 | Nov 07, 17 | LIQUIDPISTON, INC. |
| 9797297 | Compound engine assembly with common inlet | Jul 23, 15 | Oct 24, 17 | PRATT & WHITNEY CANADA CORP. |
| 9771165 | Compound engine assembly with direct drive of generator | Jun 25, 15 | Sep 26, 17 | PRATT & WHITNEY CANADA CORP. |
| 9771860 | Internal combustion engine with common rail pilot and main injection | Oct 29, 15 | Sep 26, 17 | PRATT & WHITNEY CANADA CORP. |
| 9759126 | Compound engine system with rotary engine | May 01, 15 | Sep 12, 17 | PRATT & WHITNEY CANADA CORP. |