ClassID:

142806

F04B19/04 - CPC Classification

Classification description:

Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups  -  Pumps for special use

Sub-classes:
Recent Application in this class:
#1
20260121503
2026-04-30

CURVILINEAR ELECTROMAGNETIC PUMP

#2
20260117756
2026-04-30

LINEAR ACTUATOR FOR A HIGH-PRESSURE PUMP

#3
20260116494
2026-04-30

OIL PRESSURE BALANCE STRUCTURE, BRAKE LEVER, BRAKE CALIPER, CABLE-ACTUATED HYDRAULIC CONVERSION PUMP

#4
20260071616
2026-03-12

PRESSURE WAVE GENERATOR AND METHOD OF OPERATING A PRESSURE WAVE GENERATOR

#5
20260043394
2026-02-12

LINEAR DRIVE ASSEMBLY

#6
20260036120
2026-02-05

FLUID END WITH THREADED DYNAMIC SECTION

#7
20260016005
2026-01-15

FLUID END WITH THREADED DYNAMIC SECTION

#8
20250389262
2025-12-25

MAGNETIC FLUID MICROPUMP

#9
20250382861
2025-12-18

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

#10
20250334111
2025-10-30

ELECTRIC DRIVE FRACTURING DEVICE AND BRAKING METHOD THEREFOR

#11
20250290501
2025-09-18

Strain-Actuated Microfluidic Pump Sensor

#12
20250283465
2025-09-11

FLUID END ASSEMBLY

#13
20250283455
2025-09-11

FLUID END WITH THREADED DYNAMIC SECTION

#14
20250250974
2025-08-07

HIGH PRESSURE PUMP

#15
20250243853
2025-07-31

PUMP ASSEMBLY FOR ORAL IRRIGATOR

#16
20250237213
2025-07-24

Proportional Additive Dosing Pump with Bidirectional Rolling Diaphragm

#17
20250215865
2025-07-03

PISTON COMPRESSOR AND PORTABLE REFRIGERATOR COMPRISING SAME

#18
20250183776
2025-06-05

INERTIAL ENERGY COASTDOWN FOR ELECTROMAGNETIC PUMP

#19
20250180014
2025-06-05

MODULAR POWER END

#20
20250135479
2025-05-01

ALL-PLASTIC PERFUME PUMP AND BOTTLE BODY USED THEREFOR

#21
20250075695
2025-03-06

FLUID END ASSEMBLY

#22
20250073759
2025-03-06

HANDHELD CLEANING MACHINE

#23
20250052234
2025-02-13

MOBILE PUMP SYSTEM FOR MULTIPURPOSE WATER DELIVERY

#24
20250020115
2025-01-16

FLUID END OF RECIPROCATING PUMP

#25
20240416285
2024-12-19

COMPACT WATER FILTERING DEVICE

#26
20240413729
2024-12-12

METHOD OF CONSTRUCTING A NUCLEAR REACTOR HAVING REACTOR CORE AND CONTROL ELEMENTS SUPPORTED BY REACTOR VESSEL HEAD

#27
20240410488
2024-12-12

Optimal-contact suction valve assembly guide

#28
20240376885
2024-11-14

VALVE ASSEMBLIES, VALVE ASSEMBLIES FOR USE IN PLUNGER APPLICATIONS AND RELATED METHODS

#29
20240360807
2024-10-31

High-Pressure Fuel Pump

#30
20240344507
2024-10-17

HIGH-PRESSURE PLUNGER PUMP, AND USE OF A HIGH-PRESSURE PLUNGER PUMP

#31
20240344506
2024-10-17

High pressure pump

#32
20240344492
2024-10-17

High-Pressure Fuel Pump

#33
20240328405
2024-10-03

Fluid end

#34
20240313474
2024-09-19

Blood Pump Connectors

#35
20240301960
2024-09-12

ONE-WAY VALVES

#36
20240287976
2024-08-29

FLUID SYSTEM WITH A PROPPANT MIXING PUMP

#37
20240254977
2024-08-01

Linear drive assembly

#38
20240246808
2024-07-25

Reed Switch Pump

#39
20240117806
2024-04-11

FLUID ROUTING PLUG

#40
20240068469
2024-02-29

Fluid end assembly

#41
20240044320
2024-02-08

Mobile pump system for multipurpose water delivery

#42
20240044235
2024-02-08

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

#43
20240035365
2024-02-01

BI-FUEL RECIPROCATING ENGINE TO POWER DIRECT DRIVE TURBINE FRACTURING PUMPS ONBOARD AUXILIARY SYSTEMS AND RELATED METHODS

#44
20230392487
2023-12-07

HYDRAULIC FRACTURING PUMPS TO ENHANCE FLOW OF FRACTURING FLUID INTO WELLHEADS AND RELATED METHODS

#45
20230383735
2023-11-30

Segregated multi fluid pump head assembly

#46
20230366395
2023-11-16

HIGH PRESSURE RECIPROCATING PUMP

#47
20230347467
2023-11-02

Hydraulic arrangement for an apparatus for deblocking workpieces, in particular eyeglass lenses, from associated block pieces

#48
20230340948
2023-10-26

Linear drive assembly

#49
20230322410
2023-10-12

HYDRAULIC STRUT SERVICING/DE-SERVICING TOOL

#50
20230313770
2023-10-05

High-pressure GDI pump with low-pressure bypass

#51
20230304485
2023-09-28

PISTON PUMP FOR A HIGH PRESSURE CLEANING DEVICE

#52
20230304462
2023-09-28

Gasoline direct injection fuel pump with isolated plunger sleeve

#53
20230249206
2023-08-10

Pump for dispensing a fluid

#54
20230201852
2023-06-29

Pump for dispensing a fluid

#55
20230160382
2023-05-25

Fluid end

#56
20230151724
2023-05-18

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#57
20230130997
2023-04-27

Variable displacement pumps

#58
20230122682
2023-04-20

Valve piston pump body device

#59
20230082868
2023-03-16

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

#60
20230050603
2023-02-16

Modular power end

#61
20230034207
2023-02-02

Down-lock bellows pump

#62
20230022890
2023-01-26

Fluid end assembly

#63
20230012666
2023-01-19

High pressure pump

#64
20230010643
2023-01-12

Pressure wave generator and method for operating a pressure wave generator

#65
20220412201
2022-12-29

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

#66
20220390190
2022-12-08

Electrohydrodynamics system and method

#67
20220389916
2022-12-08

High pressure pump

#68
20220380011
2022-12-01

Built-in water pumping device of manual paddle for boat

#69
20220372943
2022-11-24

RECOVERY OF WORK FROM A LIQUEFIED GAS USING HYBRID PROCESSING

#70
20220372857
2022-11-24

Hydraulic fracturing pumps to enhance flow of fracturing fluid into wellheads and related methods

#71
20220364453
2022-11-17

Fracturing apparatus

#72
20220325706
2022-10-13

ELECTRICALLY-ACTUATED LINEAR PUMP SYSTEM AND METHOD

#73
20220316461
2022-10-06

Plunger, hydraulic end and plunger pump

#74
20220307491
2022-09-29

Variable displacement pump with active bypass feedback control

#75
20220282725
2022-09-08

High pressure pump

#76
20220275717
2022-09-01

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#77
20220268515
2022-08-25

GAS LIQUEFACTION USING HYBRID PROCESSING

#78
20220235751
2022-07-28

Fluid routing plug

#79
20220220952
2022-07-14

Fracturing pump assembly

#80
20220196007
2022-06-23

VALVE ASSEMBLIES, VALVE ASSEMBLIES FOR USE WITH DOWNHOLE PUMPS AND RELATED METHODS

#81
20220195857
2022-06-23

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#82
20220163034
2022-05-26

Modular power end

#83
20220098962
2022-03-31

WEAR AND CORROSION RESISTANT STEEL COMPOSITIONS AND HIGH PRESSURE PUMPS AND PUMP COMPONENTS COMPRISED THEREOF

#84
20220079708
2022-03-17

Water pumping device for water flosser and water flosser

#85
20220051820
2022-02-17

Curvilinear electromagnetic pump

#86
20220051819
2022-02-17

Inertial energy coastdown for electromagnetic pump

#87
20220049686
2022-02-17

Fluid end

#88
20220030772
2022-02-03

HYDRAULIC MOTOR CONTROL SYSTEM AND METHOD

#89
20220003232
2022-01-06

Pump having a valve mechanism stopping and permitting flow between a suction chamber and a discharge chamber

#90
20220003099
2022-01-06

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#91
20220001841
2022-01-06

Cleaning unit

#92
20210372256
2021-12-02

Bi-fuel reciprocating engine to power direct drive turbine fracturing pumps onboard auxiliary systems and related methods

#93
20210277917
2021-09-09

Systems and methods for repairing fluid handling equipment

#94
20210270119
2021-09-02

Electric submersible pump (ESP) with gas handling shroud inlet

#95
20210265777
2021-08-26

Blood pump connectors

#96
20210246890
2021-08-12

Linear compressor

#97
20210239657
2021-08-05

Biocompatible component with structural reinforcement

#98
20210228917
2021-07-29

Tool having a pump and a pump

#99
20210228916
2021-07-29

Tool having a pump and a pump

#100
20210207589
2021-07-08

Fracturing pump assembly

#101
20210190052
2021-06-24

HIGH-PRESSURE PUMP CONFIGURATION

#102
20210180615
2021-06-17

Apparatus and method for moving viscous fluid by suction

#103
20210180590
2021-06-17

Guide for piston of high-pressure pump for vehicle

#104
20210148349
2021-05-20

High pressure pump

#105
20210148346
2021-05-20

Modular power end

#106
20210148345
2021-05-20

Fluid routing plug

#107
20210148208
2021-05-20

Fluid end

#108
20210140417
2021-05-13

MOTOR ARRANGEMENT AND PRESSURE WASHER WITH SUCH MOTOR ARRANGEMENT

#109
20210132009
2021-05-06

Plunger pump

#110
20210115782
2021-04-22

Safety variable frequency drive for preventing over pressurization of a piping network

#111
20210079913
2021-03-18

POSITIVE DISPLACEMENT PUMP INCLUDING A PLAIN BEARING FOR COMPONENTS EXPERIENCING AN OSCILLATING MOTION AT LOW SPEEDS

#112
20210018079
2021-01-21

ELECTROMECHANICAL BRAKE PRESSURE GENERATOR OR BOOSTER HAVING A THREADED DRIVE ASSEMBLAGE

#113
20200362678
2020-11-19

Mud pump

#114
20200355173
2020-11-12

Reciprocating pump systems

#115
20200339088
2020-10-29

Brake hydraulic pressure controller

#116
20200240401
2020-07-30

Fuel injection pump

#117
20200224646
2020-07-16

Piston pump, particularly a high-pressure fuel pump for an internal combustion engine

#118
20200217186
2020-07-09

Dual-pressure boosting liquid partition device, system , fleet and use

#119
20200180584
2020-06-11

Pump arrangement for a hydraulic unit having a pump piston

#120
20200164124
2020-05-28

FLUID DRIVING DEVICE

#121
20200132058
2020-04-30

Pressure transfer device and associated system, fleet and use, for pumping high volumes of fluids with particles at high pressures

#122
20200116138
2020-04-16

Linear compressor

#123
20200056599
2020-02-20

Portable hydraulic cylinder for the recharge of water for extra-vehicular activity

#124
20200025187
2020-01-23

Linear compressor

#125
20200018302
2020-01-16

Linear compressor

#126
20190371152
2019-12-05

Remote monitoring system

#127
20190367233
2019-12-05

Biometric locking jar with integrated vacuum pump

#128
20190345921
2019-11-14

Pressure pump connecting rod monitoring

#129
20190334283
2019-10-31

Blood pump connectors

#130
20190307020
2019-10-03

Cooling apparatus

#131
20190269110
2019-09-05

SYSTEM AND METHOD FOR AQUARIUM WATER REMOVAL

#132
20190143818
2019-05-16

Pump system for vehicles

#133
20190128248
2019-05-02

Microfluidic devices

#134
20190128247
2019-05-02

System and Method for a Reciprocating Injection Pump

#135
20190107312
2019-04-11

Linear compressor with heat shield between discharge cover and frame

#136
20190078561
2019-03-14

Mini pump with integrated valve core tool

#137
20190024655
2019-01-24

Systems and methods for pump slip sensing

#138
20180333658
2018-11-22

Mud pump and vacuum gas extraction system

#139
20180292363
2018-10-11

Biocompatible component with structural reinforcement

#140
20180258925
2018-09-13

Method for self-adjustment of a pump settings in a swimming pool filtering circuit

#141
20180202433
2018-07-19

Pressure pump valve monitoring system

#142
20180094624
2018-04-05

INLINE ELECTRIC PORTABLE FLUID PUMP AND METHOD

#143
20180080617
2018-03-22

Intelligent electronic candle

#144
20170355631
2017-12-14

BIOGAS COGENERATION SYSTEMS

#145
20170335836
2017-11-23

ELECTROOSMOTIC PUMP

#146
20170333009
2017-11-23

INSTRUMENTS USED IN COLLECTING FLUID SAMPLES

#147
20170312692
2017-11-02

Electroosmotic pump and fluid pumping system including the same

#148
20170254321
2017-09-07

MULTI-CHAMBER WITH ULTRA-HIGH-PRESSURE OR HYDRAULIC MOTOR COMPRESSORS OR MOTOR PUMPS FOR COMPRESSING GAS OR LIQUID AT ULTRA-HIGH PRESSURE, FORMED BY SEVERAL DIFFERENT-SIZED CONCENTRIC CHAMBERS, WHEREIN EACH CHAMBER CONTAINS SMALLER CHAMBERS

#149
20170252911
2017-09-07

HYDRAULIC PUMP FOR A HYDRODYNAMIC COMPRESSION TOOL

#150
20170233994
2017-08-17

Dual take off system

#151
20170218930
2017-08-03

SHALLOW FLUID EXTRACTOR

#152
20170208155
2017-07-20

Communication system having an array of pumps and method of use thereof

#153
20170138356
2017-05-18

Positive-displacement piston pump and rotary distribution means

#154
20170127503
2017-05-04

Inner static electricity eliminating control valve for organic solvent delivery pipelines

#155
20170107982
2017-04-20

SYSTEM AND METHOD FOR OPERATION OF A PUMP WITH FEED AND DISPENSE SENSORS, FILTRATION AND DISPENSE CONFIRMATION, AND REDUCED PRESSURE PRIMING OF FILTER

#156
20170101987
2017-04-13

High pressure pump

#157
20160280350
2016-09-29

Side-intake piston jet propulsor

#158
20160252082
2016-09-01

ELECTROOSMOTIC PUMP

#159
20160138834
2016-05-19

Systems for heating water used in hydraulic fracturing

#160
20160039054
2016-02-11

Systems and methods for repairing fluid handling equipment

#161
20150355644
2015-12-10

Shallow fluid extractor

#162
20150316142
2015-11-05

Transmission for motor vehicle and method of pumping transmission fluid through the transmission

#163
20150273137
2015-10-01

CONTINUOUS FLUID DELIVERY SYSTEM AND METHOD

#164
20150247497
2015-09-03

Waterproof pump enclosure and system including same

#165
20150233361
2015-08-20

MULTIPLEX PUMP SYSTEMS AND ASSOCIATED METHODS OF USE WITH WATERJET SYSTEMS AND OTHER HIGH PRESSURE FLUID SYSTEMS

#166
20150125311
2015-05-07

System, pump and method of vacuum generation for applications to motor vehicles

#167
20150101930
2015-04-16

Electroosmotic pump unit and assembly

#168
20140271238
2014-09-18

Graphene-trough pump systems

#169
20140208732
2014-07-31

DIRECT COMBUSTION TYPE PLUNGER HYDRAULIC PUMP

#170
20140124050
2014-05-08

Pour spout adapter assembly for pumping system

#171
20140039172
2014-02-06

Devices and systems for isolating biomolecules and associated methods thereof

#172
20130336821
2013-12-19

Apparatus and method for pumping well fluids and debris

#173
20130240083
2013-09-19

System and method having control for solids pump

#174
20130195684
2013-08-01

Subsea pumping system

#175
20130156608
2013-06-20

ELECTROKINETIC PUMP DESIGNS AND DRUG DELIVERY SYSTEMS

#176
20130153425
2013-06-20

Electro-osmotic pump

#177
20130081381
2013-04-04

POWER DEVICE USING GAS TO DRIVE LIQUID

#178
20120324734
2012-12-27

ONE PIECE PUMP WITH HINGE

#179
20120211237
2012-08-23

Apparatus and method for pumping well fluids and debris

#180
20110031268
2011-02-10

ELECTROKINETIC PUMP DESIGNS AND DRUG DELIVERY SYSTEMS

#181
20110002802
2011-01-06

Continuous fluid delivery system

#182
20100229979
2010-09-16

Fluid control apparatus

#183
20100119380
2010-05-13

Subsea pumping system

#184
20090185916
2009-07-23

Electrokinetic pump designs and drug delivery systems

#185
20080112819
2008-05-15

Submersible pump apparatus and method for using same

#186
20070224055
2007-09-27

Electrokinetic pump designs and drug delivery systems

#187
20070148014
2007-06-28

Electrokinetic pump designs and drug delivery systems

#188
20050223483
2005-10-13

Floating wave making apparatus

#189
19007066
2025-07-01

Smart speed bump and methods for energy generation

#190
19004636
2025-11-18

Linear drive assembly

#191
18324746
2023-10-17

Low-profile solar-powered flood control device

#192
17746481
2024-03-05

Mechanically or hybrid mounted valve seat

#193
15217938
2018-05-01

Systems and methods for canister fluid filters

#194
14677800
2017-01-10

Fluid delivery device for killing weeds