F02G 1/055

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Class  F02G : HOT-GAS OR COMBUSTION- PRODUCT POSITIVE-DISPLaCEMENT ENGINE PLANTS


Subclass 1/055: Hot gas positive-displacement engine plants (positive-displacement engine plants characterised by the working gas being generated by combustion in the plant F02G 3/00) of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines Component parts or details Heaters or coolers

Recent Patents

Patent #TitleFiling DateIssue DatePatent Owner
12228094 System and apparatus for energy conversionJul 06, 20Feb 18, 25Hyliion Holdings Corp.
12163485 Systems and methods utilizing gas temperature as a power sourceAug 28, 23Dec 10, 24ICE Thermal Harvesting, LLC
12129812 Engine apparatus and method for operationMay 20, 20Oct 29, 24Hyliion Holdings Corp.
12123659 Monocoque shell and tube heat exchangerDec 08, 22Oct 22, 24The Penn State Research Foundation
12104552 Stirling cycle machineAug 03, 21Oct 01, 24DEKA Products Limited Partnership
12104553 Systems and methods utilizing gas temperature as a power sourceNov 30, 23Oct 01, 24ICE Thermal Harvesting, LLC
12000357 Reciprocating heat engine with hot cylinder head and cold cylinderFeb 09, 23Jun 04, 24Not available
11994086 System for recovery of energy from a residual gasDec 17, 21May 28, 24Texel Technologies AB
11988166 Rotary heat pumpJan 12, 21May 21, 24MARUKO KEIHOKI CO., LTD.
11976609 Stirling engineNov 07, 22May 07, 24Yanmar Holdings Co., Ltd.
11976610 Constant density heat exchanger and system for energy conversionMar 20, 23May 07, 24Hyliion Holdings Corp.
11808503 Heat engines and heat pumps with separators and displacersAug 26, 22Nov 07, 23Not available
11773805 Systems and methods utilizing gas temperature as a power sourceDec 22, 22Oct 03, 23ICE Thermal Harvesting, LLC
11739711 Energy conversion apparatusOct 18, 21Aug 29, 23Hyliion Holdings Corp.
11692508 Dual stirling cycle liquid air batteryAug 03, 21Jul 04, 23The Government of the United States of America, as represented by the Secretary of the Navy
11692507 External combustion heat engine combustion chamberJul 18, 19Jul 04, 23Quantum Industrial Development Corp. & Texas A&M University - San Antonio
11680541 Systems and methods utilizing gas temperature as a power sourceNov 21, 22Jun 20, 23ICE Thermal Harvesting, LLC
11629663 Energy conversion apparatusJan 28, 22Apr 18, 23General Electric Company
11572849 Systems and methods utilizing gas temperature as a power sourceSep 22, 22Feb 07, 23ICE Thermal Harvesting, LLC
11566626 Vacuum pumpOct 21, 20Jan 31, 23Shimadzu Corporation

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Recent Publications

Publication #TitleFiling DatePub DatePatent Owner
2025/0092,843 HEAT EXCHANGER FOR STIRLING MACHINE AND METHOD FOR MANUFACTURING HEAT EXCHANGERSep 09, 24Mar 20, 25Honda Motor Co. Ltd.
2025/0092,844 STIRLING MACHINE AND METHOD FOR MANUFACTURING STIRLING MACHINESep 11, 24Mar 20, 25Honda Motor Co. Ltd.
2025/0092,845 HEAT EXCHANGER FOR STIRLING MACHINE, METHOD FOR MANUFACTURING HEAT EXCHANGER, AND REGENERATORSep 11, 24Mar 20, 25Honda Motor Co. Ltd.
2025/0027,461 STIRLING CYCLE MACHINESep 30, 24Jan 23, 25Not available
2024/0418,136 ENERGY HARVESTING HEAT ENGINEJun 17, 24Dec 19, 24Not available
2024/0271,835 STIRLING ENGINE WITH NEAR ISOTHERMAL WORKING SPACESMay 31, 22Aug 15, 24Not available
2024/0159,201 MONOLITHIC HEAT-EXCHANGER BODIESJan 26, 24May 16, 24Not available
2023/0204,003 SYSTEMS AND METHODS UTILIZING GAS TEMPERATURE AS A POWER SOURCEMar 03, 23Jun 29, 23Not available
2023/0019,495 ENERGY CONVERSION APPARATUSJan 28, 22Jan 19, 23Not available
2022/0381,199 SLOTTED DISPLACER SYSTEM FOR STIRLING ENGINESMay 29, 21Dec 01, 22Not available
2022/0290,630 MONOLITHIC HEAT-EXCHANGER BODIESMay 27, 22Sep 15, 22Not available
2022/0220,922 A Tubular Reactor Serving as a Combustor and Heat ExchangerMay 22, 20Jul 14, 22Thermolift, Inc.
2021/0381,467 CONSTANT DENSITY HEAT EXCHANGER AND SYSTEM FOR ENERGY CONVERSIONAug 20, 21Dec 09, 21Not available
2020/0325,847 STIRLING ENGINE WITH A MEMBRANE CONNECTING THE PISTON TO THE CYLINDER OF THE STIRLING ENGINE AND A METHOD OF USING THIS STIRLING ENGINEApr 28, 20Oct 15, 20SUN ORBIT GMBH
2020/0256,281 High Dynamic Density Range Thermal Cycle EngineNov 08, 17Aug 13, 20Not available
2020/0025,127 Isochoric Piston-Cylinder Heat PumpJul 17, 18Jan 23, 20Not available
2019/0203,661 SELECTIVE ABSORBER FOR HARVESTING SOLAR ENERGYAug 22, 17Jul 04, 19The Regents of the University of California
2019/0024,607 BURNER-HEAT EXCHANGER ASSEMBLY FOR AN EXTERNAL COMBUSTION ENGINEDec 29, 16Jan 24, 19Worgas Bruciatori S.r.l.
2018/0252,183 STIRLING ENGINE AND METHOD OF USING A STIRLING ENGINEMar 23, 16Sep 06, 18SUN ORBIT GMBH
2017/0350,348 ENGINE WITH DIFFERENTIAL EVAPORATION PRESSURESSep 02, 15Dec 07, 17Not available

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Top Owners in This Subclass

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Patents Issued To Date - By Filing Year

199519961997199819992000200120022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024Filing Years0255075100% of Matters Issued

Average Time to Issuance