| 2025/0043,747 | STIRLING ENGINE | Jul 31, 24 | Feb 06, 25 | Yanmar Holdings Co., Ltd. |
| 2024/0159,201 | MONOLITHIC HEAT-EXCHANGER BODIES | Jan 26, 24 | May 16, 24 | Not available |
| 2024/0102,430 | NEAR ISOTHERMAL MACHINE | Jan 11, 22 | Mar 28, 24 | Not available |
| 2021/0381,467 | CONSTANT DENSITY HEAT EXCHANGER AND SYSTEM FOR ENERGY CONVERSION | Aug 20, 21 | Dec 09, 21 | Not available |
| 2021/0033,313 | CRYOGENIC STIRLING REFRIGERATOR WITH A PNEUMATIC EXPANDER | Jul 29, 19 | Feb 04, 21 | CRYO TECH LTD. |
| 2020/0370,505 | ENERGY CONVERSION APPARATUS | May 20, 20 | Nov 26, 20 | Not available |
| 2020/0370,503 | CONSTANT DENSITY HEAT EXCHANGER AND SYSTEM FOR ENERGY CONVERSION | May 20, 20 | Nov 26, 20 | Not available |
| 2020/0370,504 | ENERGY CONVERSION APPARATUS AND CONTROL SYSTEM | May 20, 20 | Nov 26, 20 | Not available |
| 2020/0263,631 | Preventing Overstroke Of Free-Piston Stirling Engine From Loss Of Load | Feb 19, 19 | Aug 20, 20 | Not available |
| 2017/0175,672 | LIQUID PISTON ENGINE | Mar 04, 15 | Jun 22, 17 | APOLLO HYBRID, INC. |
| 2017/0138,300 | HEAT MEDIUM CIRCULATION STRUCTURE AND HOT WATER TEMPERATURE CONTROL METHOD FOR MICRO COMBINED HEAT AND POWER GENERATOR | Jun 10, 15 | May 18, 17 | KYUNGDONG NAVIEN CO., LTD. |
| 2017/0130,671 | HEAT ENGINE | Jan 25, 17 | May 11, 17 | Not available |
| 2016/0201,599 | METHOD AND THERMAL ENGINE FOR UTILIZING WASTE HEAT OR GEOTHERMAL HEAT | Nov 21, 15 | Jul 14, 16 | Richter, Berta |
| 2015/0089,948 | COMPRESSOR AND/OR EXPANDER DEVICE | Sep 04, 14 | Apr 02, 15 | GENERAL COMPRESSION, INC. |
| 2014/0202,147 | Heat Engine with High Efficiency Attributable to Temperature Responsive Equilibrium Reactions and Method for Optimization | Jan 24, 14 | Jul 24, 14 | Not available |
| 2014/0020,376 | OUTPUT CONTROLLER FOR STIRLING ENGINE | Apr 04, 11 | Jan 23, 14 | TOYOTA JIDOSHA KABUSHIKI KAISHA |
| 2012/0073,284 | HOT ZONE HEAT TRANSFER STRUCTURE OF A STIRLING ENGINE | Mar 15, 11 | Mar 29, 12 | Marketech International Corp. |
| 2011/0061,379 | HEAT ENGINE | May 14, 09 | Mar 17, 11 | Maschinenwerk Misselhorn MWM GmbH |
| 2010/0287,929 | HEAT ENGINE | Dec 22, 08 | Nov 18, 10 | Not available |
| 2009/0056,331 | HIGH EFFICIENCY INTEGRATED HEAT ENGINE (HEIHE) | Aug 28, 08 | Mar 05, 09 | Not available |