ClassID:

142240

F03B17/025 - CPC Classification

Classification description:

Other machines or engines using hydrostatic thrust and reciprocating motion

Recent Application in this class:
#1
20260092596
2026-04-02

COMMUNICATING FLUID VESSEL ENGINE SYSTEMS

#2
20260015990
2026-01-15

Hydro-Pneumatic Apparatus and Methods of Use

#3
20250320853
2025-10-16

BUOYANT COMPRESSED AIR ENERGY STORAGE

#4
20250270976
2025-08-28

ELECTRICAL POWER GENERATION SYSTEM

#5
20250154927
2025-05-15

ENERGY STORAGE SYSTEM

#6
20250092860
2025-03-20

COMMUNICATING FLUID VESSEL ENGINE SYSTEMS

#7
20250070616
2025-02-27

Systems and methods for producing clean energy

#8
20250003397
2025-01-02

BUOYANT COMPRESSED AIR ENERGY STORAGE

#9
20240401558
2024-12-05

Utilizing hydrostatic and hydraulic pressure to generate energy, and associated systems, devices, and methods

#10
20240392741
2024-11-28

Buoyancy engine

#11
20240369036
2024-11-07

Floating bladder system for producing electrical energy

#12
20240369035
2024-11-07

ENERGY TRANSFER FROM A DRUM TO A DISPLACEMENT ELEMENT

#13
20240360816
2024-10-31

COMMUNICATING FLUID VESSEL ENGINE SYSTEMS

#14
20240240606
2024-07-18

Utilizing hydrostatic and hydraulic pressure to generate energy, and associated systems, devices, and methods

#15
20240240605
2024-07-18

UTILIZING HYDROSTATIC AND HYDRAULIC PRESSURE TO GENERATE ENERGY, AND ASSOCIATED SYSTEMS, DEVICES, AND METHODS

#16
20240191682
2024-06-13

Hydroelectric power generation system

#17
20240167460
2024-05-23

A SYSTEM AND METHOD OF HYDRAULIC GRAVITATIONAL ENERGY GENERATION

#18
20240093674
2024-03-21

Communicating fluid vessel engine systems

#19
20240077054
2024-03-07

HYDROMECHANICAL ENERGY STORAGE AND ENERGY CONVERSION DEVICE, AND OPERATING METHOD

#20
20240011458
2024-01-11

Hydrostatic pressure to kinetic energy conversion system

#21
20230407834
2023-12-21

Ocean wave energy harvesting system

#22
20230374966
2023-11-23

Displacement device including force displacement mechanism with constant volume boot

#23
20230250794
2023-08-10

BUOYANT ENERGY CONVERSION SYSTEM: HARNESSING THE POWER OF WATER AND AIR FOR CLEAN ENERGY PRODUCTION

#24
20230204008
2023-06-29

Displacement device including force displacement mechanism with constant volume boot

#25
20230055645
2023-02-23

Electric generating precipitation collection system

#26
20220243696
2022-08-04

POWER GENERATION SYSTEM

#27
20220213865
2022-07-07

Displacement device including force displacement mechanism with constant volume boot

#28
20210372362
2021-12-02

DEVICE FOR GENERATING HYDROELECTRICITY BY PUMPING AND STORING LIQUID

#29
20210363960
2021-11-25

MACHINE FOR DRIVING AN ELECTRIC GENERATOR

#30
20210301795
2021-09-30

GENERATOR SYSTEM UTILIZING WEIGHTS OF RECURRENT STATIC LOADS

#31
20210246864
2021-08-12

MACHINE FOR DRIVING AN ELECTRIC GENERATOR

#32
20200217295
2020-07-09

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

#33
20200003174
2020-01-02

TORQUE-GENERATING APPARATUS POWERED BY PISTON BUOYANCY

#34
20190383260
2019-12-19

PNEUMATICALLY POWERED INTERNAL HYDRO-COMPRESSION ENGINE

#35
20190360453
2019-11-28

System for energy conversion and respective method

#36
20190338747
2019-11-07

FAIL/SAFE SYSTEM FOR MACHINE POWER GENERATOR

#37
20190032629
2019-01-31

Device for automatically generating energy

#38
20190032627
2019-01-31

Method and Apparatuses for Generating-Green Energy Source- using the weight of Tidal Body of Water

#39
20190024624
2019-01-24

BUOYANCY-DRIVEN POWER GENERATION APPARATUS

#40
20180335010
2018-11-22

Pressure collection and delivery process

#41
20180291866
2018-10-11

Buoyant force conversion device and method

#42
20180156189
2018-06-07

USE OF BUOYANCY TYPE POWER GENERATION METHOD

#43
20180073485
2018-03-15

Super graal power production system

#44
20180051668
2018-02-22

System for converting acceleration to rotational energy

#45
20170167467
2017-06-15

MODULAR HYDROKINETIC PADDLING DEVICE AND METHOD

#46
20170122284
2017-05-04

Stored energy system

#47
20160363111
2016-12-15

Potential energy store with seal

#48
20160208770
2016-07-21

Device and method for generating power using buoyancy

#49
20160061182
2016-03-03

SUSPENSION ROTARY WATER PRESSURE ENERGY CONVERSION POWER OUTPUT DEVICE

#50
20150330357
2015-11-19

Generating energy from changes in atmospheric pressure

#51
20150226079
2015-08-13

Hydro-Electrenergy

#52
20150143805
2015-05-28

POWER GENERATION/TRANSMISSION DEVICE

#53
20140312623
2014-10-23

Power generator

#54
20140298796
2014-10-09

Density engines and methods capable of efficient use of low temperature heat sources for electrical power generation

#55
20140238339
2014-08-28

Engine and outboard motor

#56
20140217736
2014-08-07

Wave-driven power generation system

#57
20140130497
2014-05-15

Power generator

#58
20140079531
2014-03-20

Hydrostatic motor and method for operating a hydrostatic motor

#59
20140033700
2014-02-06

Hydraulic energy store

#60
20130341935
2013-12-26

Reclaiming energy from waste water in tall buildings

#61
20130318960
2013-12-05

Buoyancy power generating apparatus

#62
20130177456
2013-07-11

Fluid pressure amplifier

#63
20130167529
2013-07-04

Method for rotation of a shaft using the force of gravity

#64
20130043684
2013-02-21

Hydraulic Power Generating Apparatus and Hydraulic Power Generating System

#65
20130019971
2013-01-24

Power generator

#66
20120285544
2012-11-15

Method for operating a buoyant body of a wave power plant and a wave power plant

#67
20120187699
2012-07-26

Compressed Air Accumulation System For Power Generation

#68
20120169066
2012-07-05

Hydro-mechanical electric power generator and method of generating electric power

#69
20120060489
2012-03-15

Well Buoyancy Elevator and Conveyor Power Apparatus and Method

#70
20120006015
2012-01-12

FALLING WATER POWER GENERATORS AND POWER GENERATING METHODS

#71
20110289913
2011-12-01

WAVE ENERGY TRANSFER SYSTEM

#72
20110266803
2011-11-03

Maritime device for producing electric power

#73
20110179784
2011-07-28

Vertical gravity/buoyancy power generator

#74
20110120109
2011-05-26

FALLING WATER ELECTRICAL GENERATORS AND ELECTRICAL GENERATING METHODS

#75
20110074160
2011-03-31

Wave energy conversion plant

#76
20110030365
2011-02-10

METHODS AND APPARATUS FOR ENERGY PRODUCTION

#77
20100307149
2010-12-09

HYDRODYNAMIC ENERGY GENERATION SYSTEM

#78
20100115940
2010-05-13

Apparatus and process for recovering energy from bouyancy and gravitational forces

#79
20100000212
2010-01-07

Pulley system powered by loss of buoyancy

#80
20090293472
2009-12-03

Apparatus and process for recovering energy from bouyancy and gravitational forces

#81
20090236856
2009-09-24

Power generating apparatus

#82
20090193799
2009-08-06

Hydraulic gravity harvester

#83
20090167031
2009-07-02

Electrical Energy Generator Based On Buoyancy

#84
20090165455
2009-07-02

METHODS AND APPARATUS FOR ENERGY PRODUCTION

#85
20080258471
2008-10-23

Gravity based power generator

#86
20080246283
2008-10-09

Buoyancy vehicle apparatus to create electrical power

#87
20080092535
2008-04-24

SYSTEMS AND METHODS USING GRAVITY AND BUOYANCY FOR PRODUCING ENERGY

#88
20080038061
2008-02-14

Wave energy harvesting and hydrogen-oxygen generation systems and methods

#89
20070080540
2007-04-12

HYDRAULIC BUOYANCY KINETIC ENERGY APPARATUS

#90
20070000246
2007-01-04

Energy transfer device

#91
20060017292
2006-01-26

Electric power generator equipment

#92
20060000210
2006-01-05

Fluid-operated power generating system

#93
20050235640
2005-10-27

Method and means of altering a vessel or structure in order to produce a force

#94
20050188691
2005-09-01

System and process for recovering energy from a compressed gas

#95
20050079015
2005-04-14

Hydropower generation apparatus and method

#96
20050073154
2005-04-07

Underwater electric generator

#97
20050023836
2005-02-03

Variable buoyancy float engine

#98
18654996
2025-01-28

Systems and methods for producing clean energy

#99
18479826
2024-03-05

Buoyancy power generator and buoyancy power generation method

#100
18153966
2023-09-05

Utilizing hydrostatic and hydraulic pressure to generate energy, and associated systems, devices, and methods

#101
17681327
2024-01-23

Buoyancy force energy system (BFES)

#102
17648315
2023-02-21

Differential ambient pressure powered hydraulically driven generator battery

#103
17456512
2025-07-01

Modular valvular conduit upwelling system

#104
15876768
2019-09-17

Torque-generating apparatus powered by piston buoyancy