ClassID:

137057

F01K7/36 - CPC Classification

Classification description:

Steam engine plants characterised by the use of specific types of engine ; Plants or engines characterised by their use of special steam systems, cycles or processes ; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of positive-displacement type

Recent Application in this class:
#1
20260139592
2026-05-21

Organic Rankine Cycle Decompression Heat Engine

#2
20250270932
2025-08-28

Organic Rankine Cycle Decompression Heat Engine

#3
20250215813
2025-07-03

HEAT ENGINE

#4
20240200474
2024-06-20

Heat engine

#5
20230250751
2023-08-10

Mono-block reciprocating piston composite ICE/ORC power plant

#6
20220403758
2022-12-22

Heat engine

#7
20210363900
2021-11-25

System for recovering waste heat and method thereof

#8
20210033004
2021-02-04

Flexible coal-fired power generation system and operation method thereof

#9
20200291824
2020-09-17

Heat engine

#10
20200165940
2020-05-28

Power system with carbon dioxide working fluid

#11
20200040731
2020-02-06

Near-adiabatic engine

#12
20190376418
2019-12-12

Heat engine

#13
20180258798
2018-09-13

APPARATUS, SYSTEMS, AND METHODS FOR LOW GRADE WASTE HEAT MANAGEMENT

#14
20180030858
2018-02-01

Scissor type compression and expansion machine used in a thermal energy recuperation system

#15
20170335724
2017-11-23

Organic rankine cycle decompression heat engine

#16
20170298780
2017-10-19

Thermal energy recovery device and operating method of the same

#17
20170292379
2017-10-12

Method for Generating Superheated Steam

#18
20170167303
2017-06-15

Drive unit with its drive transmission system and connected operating heat cycles and functional configurations

#19
20170130613
2017-05-11

VOLUMETRIC ENERGY RECOVERY DEVICE AND SYSTEMS

#20
20160297304
2016-10-13

Air start steam engine

#21
20160169055
2016-06-16

Lubrication of expansion machines

#22
20160130984
2016-05-12

Apparatus, systems, and methods for low grade waste heat management

#23
20150369086
2015-12-24

Organic rankine cycle decompression heat engine

#24
20150007569
2015-01-08

Volumetric energy recovery device and systems

#25
20140373527
2014-12-25

Pressurized-gas powered compressor and system comprising same

#26
20140298808
2014-10-09

Turbomachine system with direct header steam injection, related control system and program product

#27
20140053544
2014-02-27

Heat engine system for power and heat production

#28
20130152577
2013-06-20

COMPRESSION VAPOR ENGINE

#29
20120297772
2012-11-29

SYSTEMS AND METHODS FOR EFFICIENT TWO-PHASE HEAT TRANSFER IN COMPRESSED-AIR ENERGY STORAGE SYSTEMS

#30
20110308248
2011-12-22

PRESSURIZED-GAS POWERED COMPRESSOR AND SYSTEM COMPRISING SAME

#31
20110192162
2011-08-11

Method of operating a piston expander of a steam engine

#32
20110048009
2011-03-03

Generating power from medium temperature heat sources

#33
20110041499
2011-02-24

Low differential temperature rotary engines

#34
20110000407
2011-01-06

Waste oil electrical generation systems

#35
20100218500
2010-09-02

Installation and methods for storing and methods for storing and restoring electrical energy using a piston-type gas compression and expansion unit

#36
20100199652
2010-08-12

Multistage hydraulic gas compression/expansion systems and methods

#37
20090071155
2009-03-19

METHOD AND SYSTEM FOR THERMOCHEMICAL HEAT ENERGY STORAGE AND RECOVERY

#38
20090071153
2009-03-19

METHOD AND SYSTEM FOR ENERGY STORAGE AND RECOVERY

#39
20070175218
2007-08-02

Combustionless vapor driven engine and its method of operation

#40
20060266030
2006-11-30

Expansion motor

#41
20060218924
2006-10-05

Heat energy recovery apparatus

#42
20060112694
2006-06-01

Two stroke steam-to-vacuum engine

#43
20050268611
2005-12-08

Steam engine

#44
20050166869
2005-08-04

Liquid piston internal combustion power system

#45
16161344
2020-07-28

Reciprocating piston engine

#46
15218225
2017-08-29

Compound energy co-generation system

#47
14991235
2018-10-16

Reciprocating piston engine

#48
14658617
2016-07-19

Apparatus, system, and methods for mechanical energy regeneration