| 9976779 | Cryogenic refrigerator | Oct 23, 15 | May 22, 18 | Sumitomo Heavy Industries Ltd. |
| 9964340 | Stirling refrigerator | Mar 24, 15 | May 08, 18 | Sumitomo Heavy Industries, Ltd. |
| 9966817 | Electromechanical transducer | May 30, 13 | May 08, 18 | Oxford University Innovation Limited |
| 9945361 | Stirling engine for an emission-free aircraft | Oct 07, 15 | Apr 17, 18 | EADS Deutschland GmbH |
| 9896986 | Method and apparatus for operating an internal combustion engine | May 15, 14 | Feb 20, 18 | MAN TRUCK & BUS AG |
| 9874180 | Powering apparatus | Dec 18, 15 | Jan 23, 18 | MITSUI ENGINEERING & SHIPBUILDING CO., LTD. |
| 9874175 | External heat engine device | Oct 07, 14 | Jan 23, 18 | Viking Heat Engines AS |
| 9869180 | Energy harvesting heat engine and actuator | Apr 01, 16 | Jan 16, 18 | Synergy Power, LLC |
| 9869273 | Vane-rotor type Stirling engine | Nov 18, 15 | Jan 16, 18 | HYUNDAI MOTOR COMPANY |
| 9869303 | Heat/acoustic wave conversion component and heat/acoustic wave conversion unit | Sep 11, 15 | Jan 16, 18 | NGK INSULATORS, LTD. |
| 9863364 | Micro thruster uses and improvements | Jun 14, 13 | Jan 09, 18 | GAME CHANGERS, LLC |
| 9840983 | Working cylinder for an energy converter | Apr 24, 13 | Dec 12, 17 | Not available |
| 9841009 | Hybrid power system | Jul 28, 15 | Dec 12, 17 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
| 9828942 | Thermal energy recovery system | Sep 12, 16 | Nov 28, 17 | DEKA PRODUCTS LIMITED PARTNERSHIP, NEW POWER CONCEPTS LLC, |
| 9797340 | Stirling cycle machine | Jun 30, 14 | Oct 24, 17 | NEW POWER CONCEPTS LLC |
| 9790791 | External combustion engine | May 11, 12 | Oct 17, 17 | INNOVATIVE TECHNOLOGICAL SYSTEMS S.R.L. |
| 9790890 | Improving the efficiency of Stirling cycle heat machines | Oct 03, 11 | Oct 17, 17 | Not available |
| 9790891 | Stirling engine power generation system | Jun 30, 11 | Oct 17, 17 | Not available |
| 9777951 | Thermoacoustic engine | Nov 30, 12 | Oct 03, 17 | TOKAI UNIVERSITY EDUCATIONAL SYSTEM |
| 9765760 | Heat/acoustic wave conversion component and heat/acoustic wave conversion unit | Sep 11, 15 | Sep 19, 17 | NGK INSULATORS, LTD. |