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| 9828941 | Valved Stirling engine with improved efficiency | Jul 16, 15 | Nov 28, 17 | Not available |
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| 9777669 | Thermodynamic machine | Apr 29, 14 | Oct 03, 17 | XEICLE LIMITED |
| 9683514 | High efficiency combustor and closed-cycle heat engine interface | Mar 16, 12 | Jun 20, 17 | THE PENN STATE RESEARCH FOUNDATION, The United States of America as represented by the Secretary of the Navy, |
| 9598959 | Fluid expansion engine | May 27, 14 | Mar 21, 17 | Not available |
| 9551292 | Semi-isothermal compression engines with separate combustors and expanders, and associated systems and methods | Dec 19, 13 | Jan 24, 17 | BRIGHT ENERGY STORAGE TECHNOLOGIES, LLP |
| 9541027 | System and method for recovering waste heat | Jul 11, 14 | Jan 10, 17 | CATERPILLAR INC. |
| 9528467 | Stirling cycle machines | Jan 07, 13 | Dec 27, 16 | OXFORD UNIVERSITY INNOVATION LIMITED |
| 9523312 | Integrated LNG gasification and power production cycle | Nov 01, 12 | Dec 20, 16 | 8 Rivers Capital, LLC |
| 9500160 | Motor assembly | Sep 04, 15 | Nov 22, 16 | BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT |
| 9494107 | Thermodynamic machine | Mar 07, 14 | Nov 15, 16 | FOSTER FINDLAY ASSOCIATES LIMITED, WHITTAKER ENGINEERING (STONEHAVEN) LIMITED, |
| 9416702 | Systems, methods, and apparatuses related to the use of gas clathrates | Apr 12, 13 | Aug 16, 16 | ELWHA LLC |
| 9404440 | Common platform modular stirling radioisotope generator | Dec 19, 12 | Aug 02, 16 | LOCKHEED MARTIN CORPORATION |
| 9382873 | Stirling engine with regenerator internal to the displacer piston and integral geometry for heat transfer and fluid flow | Jul 24, 13 | Jul 05, 16 | Not available |