ClassID:

142238

F03B17/005 - CPC Classification

Classification description:

Other machines or engines Installations wherein the liquid circulates in a closed loop ; Alleged of this or similar kind

Recent Application in this class:
#1
20260126027
2026-05-07

INFRASTRUCTURE FOR RENEWABLE ENERGY POWER GENERATION INCLUDING INFRASTRUCTURE FOR THERMAL CYCLE BASED AT LEAST IN PART ON GRAVITATION FORCE

#2
20260104029
2026-04-16

Clementine Green Energy Electrical Generator

#3
20260002523
2026-01-01

MOLDED MAT WITH INTEGRATED FLUID FLOW CHANNELS AND MANIFOLD SYSTEM FOR ENERGY TRANSFER

#4
20250043776
2025-02-06

APPARATUS AND METHOD TO UTILIZE COMPRESSED AIR FOR MOVING MASS BETWEEN TANKS

#5
20250027474
2025-01-23

HYBRID NUCLEAR-HYDRO POWER PLANT

#6
20240200539
2024-06-20

HYDRO-MECHANICAL ENERGY TRANSFER SYSTEM WITH DYNAMIC WATER TANKS AND TURBINE GENERATOR

#7
20240167460
2024-05-23

A SYSTEM AND METHOD OF HYDRAULIC GRAVITATIONAL ENERGY GENERATION

#8
20240147969
2024-05-09

NON-RESISTIVE CIRCULATION TO ELEVATED CONTAINERS

#9
20230417215
2023-12-28

CLOSED LOOP HYDROPOWER GENERATOR

#10
20230193161
2023-06-22

Composition, Aerosol Composition, Cleaning Agent, Solvent, Silicone Solvent, Foaming Agent, Heat-Transfer Medium, Fire Extinguishing Agent, and Fumigant Containing the Composition, Heat-Transfer Device Containing the Heat-Transfer Medium, and System Containing the Heat-Transfer Device

#11
20230175472
2023-06-08

SYSTEM FOR STORING AND RECOVERING ENERGY

#12
20230151788
2023-05-18

Pumped hydro energy storage system and method, including fire extinguishing features

#13
20230055645
2023-02-23

Electric generating precipitation collection system

#14
20220389901
2022-12-08

SELF-POWERED ELECTRIC GENERATOR THAT WORKS BY CIRCULATING WATER IN A CLOSED CIRCUIT

#15
20220299005
2022-09-22

Energy conversion system

#16
20220195975
2022-06-23

Energy storage system

#17
20220128025
2022-04-28

SYSTEM FOR ELECTRICITY GENERATION USING HEAT PUMP AND HYDRO TURBINES

#18
20210332786
2021-10-28

Method to lift water and generate electrical power

#19
20210285342
2021-09-16

THE METHOD OF CONVERSION OF THERMAL ENERGY INTO MECHANICAL ENERGY AND A THERMO-HYDRODYNAMIC CONVERTER

#20
20210190029
2021-06-24

ELECTRICITY GENERATION SYSTEM USING HIGH-PRESSURE WATER EJECTION

#21
20210156355
2021-05-27

Method and apparatus of extracting energy from water waves to generate electric power

#22
20210017952
2021-01-21

Generator

#23
20210010453
2021-01-14

Method of hydraulically converting wind power

#24
20200309085
2020-10-01

Air-driven generator

#25
20200217295
2020-07-09

Hydraulic device using gravity and buoyancy forces and method for operating such a device

#26
20200191108
2020-06-18

Refrigeration cycle ejector power generator

#27
20200166014
2020-05-28

SOLID PUMPED HYDRO ENERGY STORAGE USING SLURRY

#28
20200124020
2020-04-23

Power by gravity

#29
20200048124
2020-02-13

SYSTEM AND METHOD FOR CLOSED-LOOP DISSOLVED OXYGEN MONITORING AND CONTROL

#30
20200032767
2020-01-30

Power generating using lava lamp system

#31
20200018282
2020-01-16

A CLOSED CYCLE HYDROELECTRIC PLANT WITH AIR HYDRAULICS CENTRIFUGE JET TURBINE

#32
20190360454
2019-11-28

Apparatus for generating energy

#33
20190331087
2019-10-31

VORTEX HYDROTURBINE AND METHOD FOR OPERATING THE VORTEX HYDROTURBINE

#34
20190271294
2019-09-05

Hybrid heat engine

#35
20190249641
2019-08-15

Electricity generator and a method of generating electricity

#36
20190242357
2019-08-08

Hydraulic-pneumatic energy storage and recovery system

#37
20190219027
2019-07-18

Vortex P3M3 Omega-B3

#38
20190101095
2019-04-04

Hydroelectric turbine system

#39
20190063396
2019-02-28

Air-driven generator

#40
20190036421
2019-01-31

CLOSED-LOOP FLUIDIC POWER GENERATOR

#41
20190032628
2019-01-31

System for producing energy via use of gravity

#42
20190016206
2019-01-17

Water Gravity Loop Power ARA EV (WGLPARAEV)

#43
20180355839
2018-12-13

Portable Self-Contained Multi-Fluid Electrical Generator

#44
20180355838
2018-12-13

GENERATING ENERGY BY MEANS OF AUTARCHIC TYPE 2.1 TO TYPE 4.1 HYDROELECTRIC POWER PLANTS

#45
20180347580
2018-12-06

Systems and methods for generating clean energy through hydrodynamic closed cycle

#46
20180266384
2018-09-20

Hydroelectric system and method

#47
20180252199
2018-09-06

Water powered motor for producing useful work

#48
20180238296
2018-08-23

Steam-assisted gravity drive system

#49
20180216598
2018-08-02

System for producing energy via use of gravity

#50
20180183299
2018-06-28

ORC & S-CO2 BRAYTON CYCLE FUEL CELL(S) UTILITY PATENT WITH PROCESS CLAIMS

#51
20180171814
2018-06-21

Oscillating unites buoyancy hydro electric loop pistons

#52
20180159444
2018-06-07

INFINITYMATRIX AND INFINITYSCREW ENGINE SYSTEMS AND METHODS FOLLOWING A TORUS PATTERN

#53
20180156188
2018-06-07

HIGH-EFFICIENCY ECOLOGICAL POWER UNIT

#54
20180119668
2018-05-03

GRAVITATIONAL POWER PLANT FOR GENERATING ELECTRICITY

#55
20180100500
2018-04-12

Energy generating system and method

#56
20180094617
2018-04-05

Device and Method to Convert Reciprocating Linear Motion into Linear Fluid Flow

#57
20180091021
2018-03-29

PERMANENT VERTICAL HYDRAULIC WATER CYCLE GENERTOR

#58
20180030950
2018-02-01

ANTI-DROUGHT AND ANTI-FLOOD BY STILL WATER CIRCULATION GENERATION

#59
20170321651
2017-11-09

Mass levitator with energy conversion

#60
20170298756
2017-10-19

Stand Alone Hydro Electric Power Supply System

#61
20170264164
2017-09-14

Device and Method for Storing Energy

#62
20170260962
2017-09-14

Method of actuating an ocean current electric power generator and an actuation control apparatus

#63
20170250590
2017-08-31

System for Method for Generating Hydro Electricity

#64
20170229938
2017-08-10

Instant energy system

#65
20170211540
2017-07-27

HYDRAULIC POWER GENERATION DEVICE

#66
20170191468
2017-07-06

DEVICE THAT USES GRAVITY TO MOVE WEIGHTS ACROSS A SHAFT ASSEMBLY FOR ROTATION AND TORQUE AND A BRAKING APPARATUS TO REGULATE ROTATION SPEED

#67
20170141649
2017-05-18

System for producing energy via use of gravity

#68
20170133910
2017-05-11

TOWER BASED KINETIC ENERGY GENERATION METHOD AND DEVICE THEREOF

#69
20170126097
2017-05-04

ELECTRICAL GENERATION SYSTEM

#70
20170107846
2017-04-20

Rankine-cycle power-generating apparatus

#71
20170085155
2017-03-23

HIGH EFFICIENCY ENERGY PRODUCTION APPARATUS USING POTENTIAL ENERGY

#72
20170082085
2017-03-23

Waterwheel for a Waterwheel Energy System

#73
20170074230
2017-03-16

Hydroelectricity and compressed-air power converter system

#74
20170025924
2017-01-26

Tower-Based Power Generation Method And Device Thereof

#75
20160377045
2016-12-29

Energy-generating pump

#76
20160341174
2016-11-24

Water pressure power-generating system

#77
20160319692
2016-11-03

Turbine manifold assembly

#78
20160298594
2016-10-13

MECHANICAL LEVERAGE AND GRAVITY GENERATING CLEAN POWER PLANT

#79
20160273522
2016-09-22

Systems, methods and apparatuses for harvesting power generated in footwear

#80
20160273511
2016-09-22

Waterwheel for a Waterwheel Energy System

#81
20160265505
2016-09-15

A DEVICE, SYSTEM AND METHOD FOR RECIRCULATION OF WATER AND ENERGY GENERATION

#82
20160238195
2016-08-18

Self generating power generator for cryogenic systems

#83
20160215753
2016-07-28

Mass levitator with energy conversion

#84
20160201643
2016-07-14

Portable Hydroelectric Generator

#85
20160201642
2016-07-14

Hydroelectric power systems and related methods

#86
20160197534
2016-07-07

HVAC SYSTEM WITH ENERGY RECOVERY MECHANISM

#87
20160146180
2016-05-26

Buoyancy-driven power generation system

#88
20160123296
2016-05-05

Synergic method for hydrodynamic energy generation with neutralized head pressure pump

#89
20160108886
2016-04-21

Machine for generating power by rotating metal pinwheels via hydraulic and gravitational forces

#90
20160084219
2016-03-24

Submersible hydroelectric generator apparatus and a method of evacuating water from such an apparatus

#91
20160079829
2016-03-17

ACCELERATED FLUID MACHINE

#92
20160076510
2016-03-17

HYDRAULIC POWER GENERATION DEVICE

#93
20160003089
2016-01-07

Hydrodynamic energy generation system with neutralized pressure pump

#94
20150354527
2015-12-10

HYDRAULIC POWER GENERATION DEVICE

#95
20150300196
2015-10-22

Solar powered compressor fan driven turbine grid scale electricity generation system

#96
20150211480
2015-07-30

SYSTEM AND METHOD FOR STORING ENERGY

#97
20150198138
2015-07-16

HYDRODYNAMIC ENERGY GENERATION SYSTEM WITH ENERGY RECOVERY AND LEVERING SUBSYSTEM

#98
20150198137
2015-07-16

HYDRODYNAMIC ENERGY GENERATION SYSTEM

#99
20150198057
2015-07-16

Hydrodynamic energy generation system with energy recovery and levering subsystem

#100
20150167627
2015-06-18

H2O Gravity Flow Generator

#101
20150130192
2015-05-14

GRAVITY BASED ENERGY CONVERSION DEVICE

#102
20150061293
2015-03-05

Hydro-electric system and device for producing energy

#103
20150001141
2015-01-01

DEVICE FOR GENERATING ELECTRICITY FROM A PRESSURIZED WATER CIRCULATION SYSTEM

#104
20140375059
2014-12-25

Fluid-driven power generating apparatus

#105
20140352295
2014-12-04

INSTALLATION FOR STORING THERMAL ENERGY AND METHOD FOR THE OPERATION THEREOF

#106
20140312623
2014-10-23

Power generator

#107
20140255166
2014-09-11

Energy-storing and power-generating system and method for a vertical-axis wind generator

#108
20140250879
2014-09-11

Water gravity loop power plant (WGLPP)

#109
20140250875
2014-09-11

Systems, methods and apparatuses for harvesting power generated in a footwear

#110
20140239642
2014-08-28

Wave-driven power generation system

#111
20140186157
2014-07-03

Hydroelectric power generation system

#112
20140175804
2014-06-26

METHOD AND APPARATUS OF GENERATING POWER FROM ATMOSPHERIC PRESSURE AND VACUUM

#113
20140133961
2014-05-15

Method and device for producing a driving force by bringing about differences in a closed gas/liquid system

#114
20140130497
2014-05-15

Power generator

#115
20140103659
2014-04-17

CONTINUOUS ELECTRICAL GENERATING WATER FLOW SYSTEM /OR C.E.G.F.S.

#116
20140077497
2014-03-20

Fluid-driven power generating apparatus

#117
20140075946
2014-03-20

Hydroelectric Power Generation Device

#118
20140075931
2014-03-20

Energy transfer and recycling open-closed hybrid system

#119
20130307272
2013-11-21

MOBILE HYDRO ELECTRIC DEVICE

#120
20130270835
2013-10-17

SYSTEM AND METHOD FOR GENERATING ELECTRICITY

#121
20130247556
2013-09-26

BUOYANCY ENGINE USING A SEGMENTED CHAIN

#122
20130247551
2013-09-26

Centrifugal force harnessing system and power generation method

#123
20130221673
2013-08-29

POWER GENERATING UNIT

#124
20130187386
2013-07-25

Deep water hydro-electric power system

#125
20130140830
2013-06-06

System for generating electric and mechanical power utilizing a thermal gradient

#126
20130068565
2013-03-21

Additionally improved device and method for converting gravitational force to energy

#127
20130043681
2013-02-21

METHODS AND SYSTEMS FORHYDROELECTRIC POWER GENERATION

#128
20130001949
2013-01-03

Kinetic energy generation device

#129
20120299304
2012-11-29

Apparatus for Generating Electrical Energy

#130
20120297759
2012-11-29

System of power generation with under water pressure of air

#131
20120207588
2012-08-16

Portable Hydro Electric Generator

#132
20120200088
2012-08-09

Sipoline Hydro Electric Generator

#133
20120169061
2012-07-05

Power Generation System, Power Generator and Method Thereof

#134
20120160350
2012-06-28

MINIATURE HYDROELECTRIC POWER PLANT

#135
20120090322
2012-04-19

BESS (Barrett Energy Simple System)

#136
20120080882
2012-04-05

Electric generator utilizing high pressure fluid spray to rotate power generating

#137
20120074703
2012-03-29

CIRCULATING ELECTRIC GENERATOR

#138
20120061967
2012-03-15

OCEAN WATER RUN AND VERTICAL DROP IS GREEN POWER GENERATION

#139
20120060490
2012-03-15

Hydraulic power apparatus

#140
20120049673
2012-03-01

Generator System for Water Tank

#141
20120047885
2012-03-01

Potential energy regenerating system and method and electricity regenerating system and method

#142
20120031093
2012-02-09

Large water turbine

#143
20120001433
2012-01-05

Fluid Driven Wheel System For Generating Electricity

#144
20110308243
2011-12-22

FLUID CIRCULATION SYSTEM

#145
20110304147
2011-12-15

Water Cycle Generating System

#146
20110300004
2011-12-08

Pumping system and method

#147
20110287399
2011-11-24

Display mechanism illustrating fluid dynamics

#148
20110266804
2011-11-03

ANCIENT HYDROELECTRIC COMPANY

#149
20110241345
2011-10-06

EXPANDABLE MULTI-SET CIRCULATION HYDROELECTRIC POWER GENERATION METHOD AND SYSTEM

#150
20110204645
2011-08-25

Hydropower system with reciprocal floatation device

#151
20110204627
2011-08-25

Electrical generating device with potential energy of water or fluid

#152
20110095535
2011-04-28

Electrical generating device with potential energy of water or fluid

#153
20110080002
2011-04-07

Controlled momentum hydro-electric system

#154
20110074163
2011-03-31

Cangrier-M87 machine or C-M87 a very powerful synchronized multi-lever perpetual motion machine designed for hydroelectric (hydraulic) power generation water recycling concept

#155
20100270811
2010-10-28

Generating station which transforms the force of gravity into electricity

#156
20100253080
2010-10-07

Apparatus for Generating Electricity

#157
20100212321
2010-08-26

Heat exchangers and tower structure for density-driven power generation

#158
20100207394
2010-08-19

DEVICE AND METHOD FOR UTILIZING WATER FLOW KINETIC ENERGY CONTINUOUSLY

#159
20100187827
2010-07-29

Method of Generating Hydroelectric Power

#160
20100180587
2010-07-22

Power production employing buoyancy, gravity and kinetic energy

#161
20100176597
2010-07-15

Fluid-based electrical generator

#162
20100170242
2010-07-08

Drive energy through buoyancy-gravitational force

#163
20100154405
2010-06-24

Buoyancy engine using a segmented chain

#164
20100072754
2010-03-25

Water turbine with water circulation

#165
20100066092
2010-03-18

Hydroelectric power generator

#166
20100038914
2010-02-18

Methods and machines which use 3DUG and UGP of SCP filled up the universe

#167
20100001537
2010-01-07

DEVICE AND METHOD FOR PRODUCING ELECTRICITY

#168
20100001536
2010-01-07

METHOD AND APPARATUS FOR GENERATING MOTION OF A SERIES OF HOLLOW ELEMENTS IN A FLUID ENVIRONMENT

#169
20090308061
2009-12-17

Cangrier-M1 machine or C-M1 the powerful miracle perpetual motion machine designed for hydroelectric power generation water recycling concept

#170
20090273189
2009-11-05

Compact-sized generation of appreciable hydropower through centrifuge-induced gravity effects

#171
20090273188
2009-11-05

Apparatus for generating electricity through oscillatory motion

#172
20090255244
2009-10-15

Continuous fluid circuit electricity generating system

#173
20090235659
2009-09-24

Energy Source Device

#174
20090230687
2009-09-17

Electrical generation from water power

#175
20090206609
2009-08-20

Hydro electrical plant

#176
20090160192
2009-06-25

Circulating hydroelectricity generating and energy storing apparatus

#177
20090152871
2009-06-18

Multiple energy inputs hydropower system

#178
20090151319
2009-06-18

Thrust generator

#179
20090140523
2009-06-04

System and process for generating hydroelectric power

#180
20090115189
2009-05-07

POWER GENERATION DEVICE

#181
20090058092
2009-03-05

SELF-SUPPORTED POWER GENERATION DEVICE

#182
20080303282
2008-12-11

Water cycling system with compressor motive force and with turbine electric power generator

#183
20080238104
2008-10-02

Pressurized water powered engine

#184
20080224474
2008-09-18

Fluid engine

#185
20080141652
2008-06-19

Ring jet propulsor

#186
20080028760
2008-02-07

Philippians 419 engine - power generation

#187
20070189111
2007-08-16

System for Converting Hydrokinetic Energy to Mechanical Energy

#188
20070152451
2007-07-05

Compact-sized generation of appreciable hydropower through centrifuge-induced gravity effects

#189
20070152450
2007-07-05

Power generation system

#190
20070065272
2007-03-22

Centrifugal water lift electrical generator

#191
20070041830
2007-02-22

Hydrodynamic closed loop turboset-selfbooster

#192
20070018461
2007-01-25

Fluid driven electricity generator

#193
20060150625
2006-07-13

Natural forces power system

#194
20060150622
2006-07-13

Hydraulic machine of boosting and recovery of the liquid in internal movements in the electric energy produciton

#195
20060032374
2006-02-16

Hydraulic liquid pumping system

#196
20050212298
2005-09-29

System for electric generating using accumulation pressure

#197
20050103004
2005-05-19

Velocity intensifying power system

#198
20050063783
2005-03-24

Dock-like automatic fluid recycle device

#199
20050052028
2005-03-10

Hydraulic power generation system based on water pumping by weight of water

#200
20050029818
2005-02-10

Hydroelectric machine

#201
20050023836
2005-02-03

Variable buoyancy float engine

#202
18923324
2025-07-01

Gravitational torque amplifier apparatus and method

#203
18095811
2024-10-29

Induced flow generator apparatus for power generation

#204
17899326
2024-08-27

Electrical power generation using compressed gas

#205
17192348
2024-04-30

Parallel mass transfer electric power generator system and process

#206
15006086
2018-01-02

Apparatus, system and method for producing rotational torque to generate electricity and operate machines

#207
14641815
2015-10-20

Pump/generator over-unity apparatus and method

#208
14515101
2015-06-09

Hydrodynamic energy generation system with dual fluid entry system

#209
13898594
2017-05-16

System and method for capacitive heat to electrical energy conversion