Topic leaderboard
Positive-displacement machines & pumps
Ranked by the PatentIndex Score — a 1–99 percentile within F04B · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest F04B patents became public in the last 2 years — the current frontier
- 199Dean Kamen132 patents · 10,349 citations
- 296Jason A. Demers73 patents · 4,962 citations
- 392Larry B. Gray173 patents · 6,585 citations
- 488Brian D. Tracey48 patents · 3,562 citations
- 583James D. Dale70 patents · 3,851 citations
- 679Michael J. Wilt41 patents · 3,134 citations
- 775Kevin L. Grant41 patents · 2,918 citations
- 871N. Christopher Perry17 patents · 1,664 citations
- 967Russell H. Beavis66 patents · 939 citations
- 1063Richard J. Lanigan29 patents · 1,634 citations
- 1158Chad Lawman40 patents · 1,179 citations
- 1254David Kubricht40 patents · 1,179 citations
- 1350David Todd40 patents · 1,179 citations
- 1446Jeffrey Pollack40 patents · 1,179 citations
- 1542John J. Crosetto40 patents · 1,179 citations
- 1638John Fischer40 patents · 1,179 citations
- 1733Richard Cheatham40 patents · 1,179 citations
- 1829Tyler Nolen40 patents · 1,179 citations
- 1925Jared Oehring63 patents · 3,372 citations
- 2021Brandon N. Hinderliter51 patents · 2,630 citations
- 2117Tony Yeung93 patents · 2,468 citations
- 2213Ricardo Rodriguez-Ramon87 patents · 2,453 citations
- 238Joseph Foster60 patents · 1,896 citations
- 244David W. Mcgill30 patents · 1,310 citations
- 251John M. Kerwin54 patents · 1,528 citations
Active· last 5 yrs
Sustained F04B output across the last 5 years
- 199Dean Kamen132 patents · 10,349 citations
- 296Eldon Schelske34 patents · 2,843 citations
- 392Todd Coli34 patents · 2,843 citations
- 488Jason A. Demers73 patents · 4,962 citations
- 583Larry B. Gray173 patents · 6,585 citations
- 679Brian D. Tracey48 patents · 3,562 citations
- 775James D. Dale70 patents · 3,851 citations
- 871Michael J. Wilt41 patents · 3,134 citations
- 967Kevin L. Grant41 patents · 2,918 citations
- 1063Robert J. Bryant27 patents · 4,843 citations
- 1158N. Christopher Perry17 patents · 1,664 citations
- 1254Russell H. Beavis66 patents · 939 citations
- 1350Richard J. Lanigan29 patents · 1,634 citations
- 1446Geoffrey P. Spencer16 patents · 2,160 citations
- 1542Chad Lawman40 patents · 1,179 citations
- 1638David Kubricht40 patents · 1,179 citations
- 1733David Todd40 patents · 1,179 citations
- 1829Jeffrey Pollack40 patents · 1,179 citations
- 1925John J. Crosetto40 patents · 1,179 citations
- 2021John Fischer40 patents · 1,179 citations
- 2117Richard Cheatham40 patents · 1,179 citations
- 2213Tyler Nolen40 patents · 1,179 citations
- 238Jared Oehring63 patents · 3,372 citations
- 244Brandon N. Hinderliter51 patents · 2,630 citations
- 251Elden Crom8 patents · 1,125 citations
All-time canon
Career PatentIndex Score in F04B
- 199Michael L. Blomquist13 patents · 7,460 citations
- 296Stephen R. Quake54 patents · 5,790 citations
- 392Marc A. Unger34 patents · 5,331 citations
- 488Ronald E. Pelrine33 patents · 8,364 citations
- 583Roy D. Kornbluh32 patents · 8,332 citations
- 679J. Wallace Parce11 patents · 3,282 citations
- 775Michael R. Knapp10 patents · 3,123 citations
- 871Dean Kamen132 patents · 10,349 citations
- 967Thomas L. Peterson8 patents · 4,394 citations
- 1063Eldon Schelske34 patents · 2,843 citations
- 1158Todd Coli34 patents · 2,843 citations
- 1254Hou-Pu Chou32 patents · 3,514 citations
- 1350Todd A. Thorsen30 patents · 3,327 citations
- 1446Axel Scherer31 patents · 3,315 citations
- 1542Jason A. Demers73 patents · 4,962 citations
- 1638Qibing Pei25 patents · 5,044 citations
- 1733Larry B. Gray173 patents · 6,585 citations
- 1829Brian D. Tracey48 patents · 3,562 citations
- 1925James D. Dale70 patents · 3,851 citations
- 2021Michael J. Wilt41 patents · 3,134 citations
- 2117James M. Olsen10 patents · 2,578 citations
- 2213Kevin L. Grant41 patents · 2,918 citations
- 238Lawrence B. Gray8 patents · 2,978 citations
- 244Robert J. Bryant27 patents · 4,843 citations
- 251Geoff Spencer5 patents · 2,048 citations
Rising· last 2 yrs
The top-scoring F04B patents made public in the last 2 years
- 199US11920684B1✦ AIMechanically or hybrid mounted valve seat23 cites · 202490% earned
- 296US12203476B2✦ AIIn-line pumping apparatus, system and method for increasing liquid flow in gravity network9 cites · 202487% earned
- 392US12270394B2✦ AIPacking bore wear sleeve retainer system8 cites · 202476% earned
- 488US12049887B2Peristaltic pump8 cites · 202476% earned
- 583US12000257B2Fluid end8 cites · 202480% earned
- 679US12146399B2Fluid coupling assemblies for a manifold of a hydraulic fracturing system and related meth4 cites · 202462% earned
- 775US12292120B1System and method for valve assembly8 cites · 202580% earned
- 871US12345249B1Vacuum adsorber2 cites · 202576% earned
- 967US12006807B2Power distribution trailer for an electric driven hydraulic fracking system5 cites · 202463% earned
- 1063US12345332B2Self-locking plug5 cites · 202472% earned
- 1158US11994121B1Piston in piston variable displacement hydraulic device5 cites · 202477% earned
- 1254US12104362B1Assessing and remediating well clogging from bacteria, systems, apparatuses, and methods3 cites · 202463% earned
- 1350US12352356B2Fluid end with clamped retention3 cites · 202472% earned
- 1446US12055124B1Four-quadrant radial piston hydraulic device and working method thereof3 cites · 202480% earned
- 1542US12338020B1Vacuum air extraction device with high practicality and reliability3 cites · 202580% earned
- 1638US12410787B2Air pump having reminding function3 cites · 202480% earned
- 1733US11939828B2Variable frequency drive configuration for electric driven hydraulic fracking system4 cites · 202457% earned
- 1829US12000256B2Electric driven hydraulic fracking system4 cites · 202461% earned
- 1925US12404847B2Reciprocating piston pump4 cites · 202470% earned
- 2021US12031559B1Integrated electro-hydraulic unit4 cites · 202482% earned
- 2117US12066252B1Gas collection system4 cites · 202482% earned
- 2213US11990598B1Heat activated multiphase fluid-operated pump for battery temperature control6 cites · 202467% earned
- 238US12066017B2Pumping cassette3 cites · 202447% earned
- 244US12196200B2Pump rod and driving link with side-load reducing configuration2 cites · 202444% earned
- 251US12338815B1Fluid end1 cites · 202544% earned
Active· last 5 yrs
The top-scoring F04B patents of the last 5 years
- 199US10961993B1✦ AIContinuous high-power turbine fracturing equipment180 cites · 202188% earned
- 296US10895202B1✦ AIDirect drive unit removal system and associated methods173 cites · 202181% earned
- 392US10961908B1✦ AISystems and methods to enhance intake air flow to a gas turbine engine of a hydraulic frac166 cites · 202194% earned
- 488US10907459B1Methods and systems for operating a fleet of pumps161 cites · 202182% earned
- 583US11236739B2Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturi134 cites · 202185% earned
- 679US11047379B1Status monitoring and failure diagnosis system for plunger pump160 cites · 202194% earned
- 775US11242737B2Turbine fracturing equipment149 cites · 202190% earned
- 871US11111768B1Drive equipment and methods for mobile fracturing transportation platforms113 cites · 202185% earned
- 967US11519395B2Turbine-driven fracturing system on semi-trailer90 cites · 202287% earned
- 1063US11125066B1Systems and methods to operate a dual-shaft gas turbine engine for hydraulic fracturing111 cites · 202182% earned
- 1158US11109508B1Enclosure assembly for enhanced cooling of direct drive unit and related methods111 cites · 202183% earned
- 1254US11168681B2Drive system for hydraulic fracturing pump102 cites · 202193% earned
- 1350US11401927B2Status monitoring and failure diagnosis system for plunger pump96 cites · 202193% earned
- 1446US11149533B1Systems to monitor, detect, and/or intervene relative to cavitation and pulsation events d93 cites · 202181% earned
- 1542US11549349B2Fracturing control apparatus and control method therefor74 cites · 202289% earned
- 1638US11492887B2Power supply semi-trailer for electric drive fracturing equipment87 cites · 202189% earned
- 1733US11466680B2Systems and methods of utilization of a hydraulic fracturing unit profile to operate hydra86 cites · 202182% earned
- 1829US11208953B1Systems and methods to enhance intake air flow to a gas turbine engine of a hydraulic frac84 cites · 202282% earned
- 1925US10989180B2Power sources and transmission networks for auxiliary equipment onboard hydraulic fracturi95 cites · 202193% earned
- 2021US11377943B2Wellbore hydraulic fracturing through a common pumping source93 cites · 202187% earned
- 2117US11519405B2Valve spring seat sleeve, valve assembly and plunger pump77 cites · 202293% earned
- 2213US11560779B2Operation method of a turbine fracturing device and a turbine fracturing device75 cites · 202284% earned
- 238US11022526B1Systems and methods for monitoring a condition of a fracturing component section of a hydr88 cites · 202189% earned
- 244US11015594B2Systems and method for use of single mass flywheel alongside torsional vibration damper as81 cites · 202180% earned
- 251US11592020B2Fracturing equipment64 cites · 202288% earned
All-time canon
The defining F04B patents of the whole record
- 199US6545384B1✦ AIElectroactive polymer devices1,768 cites · 200396% earned
- 296US6583533B2✦ AIElectroactive polymer electrodes1,629 cites · 200293% earned
- 392US5447417A✦ AISelf-adjusting pump head and safety manifold cartridge for a peristaltic pump1,597 cites · 199596% earned
- 488US5693020AHose pump for the exact dosing of small quantities of liquids1,522 cites · 199795% earned
- 583US4487603AImplantable microinfusion pump system1,403 cites · 198495% earned
- 679US5935099ADrug pump systems and methods1,187 cites · 199995% earned
- 775US5485408APump simulation apparatus1,132 cites · 199691% earned
- 871US6998736B2Apparatus and method for controlling driving of linear motor1,063 cites · 200495% earned
- 967US7225959B2Portable, battery-powered air compressor for a pneumatic tool system1,061 cites · 200295% earned
- 1063US7408310B2Apparatus for controlling driving of reciprocating compressor and method thereof1,033 cites · 200693% earned
- 1158US6841967B2Coil winding number variable type motor and coil winding number varying method for varying1,024 cites · 200295% earned
- 1254US7489055B2Linear motor and linear compressor using the same1,022 cites · 200795% earned
- 1350US5338157ASystems and methods for communicating with ambulatory medical devices such as drug deliver954 cites · 199491% earned
- 1446US6408878B2Microfabricated elastomeric valve and pump systems910 cites · 200184% earned
- 1542US6818395B1Methods and apparatus for analyzing polynucleotide sequences867 cites · 200488% earned
- 1638US5088515AValve system with removable fluid interface850 cites · 199295% earned
- 1733US5482446AAmbulatory infusion pump835 cites · 199692% earned
- 1829US6565727B1Actuators for microfluidics without moving parts829 cites · 200388% earned
- 1925US4498843AInsulin infusion pump825 cites · 198595% earned
- 2021US6911345B2Methods and apparatus for analyzing polynucleotide sequences820 cites · 200288% earned
- 2117US4370983AComputer-control medical care system812 cites · 198392% earned
- 2213US5658250ASystems and methods for operating ambulatory medical devices such as drug delivery devices799 cites · 199795% earned
- 238US6241704B1Drug pump systems and methods762 cites · 200189% earned
- 244US5603351AMethod and system for inhibiting cross-contamination in fluids of combinatorial chemistry 731 cites · 199790% earned
- 251US5029805AValve arrangement of microstructured components666 cites · 199195% earned
Rising· last 2 yrs
Assignees whose newest F04B patents became public in the last 2 years — the current frontier
- 199LG ELECTRONICS INC533 patents · 8,665 citations
- 296DEKA PRODUCTS LP245 patents · 16,442 citations
- 392BJ ENERGY SOLUTIONS LLC94 patents · 2,270 citations
- 488HONEYWELL INT INC37 patents · 1,298 citations
- 583YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD69 patents · 1,557 citations
- 679CATERPILLAR INC238 patents · 3,912 citations
- 775GARDNER DENVER INC10 patents · 694 citations
- 871GEN ELECTRIC114 patents · 1,448 citations
- 967HALLIBURTON ENERGY SERVICES INC155 patents · 1,177 citations
- 1063BOSCH GMBH ROBERT483 patents · 5,343 citations
- 1158SCHLUMBERGER TECHNOLOGY CORP89 patents · 1,229 citations
- 1254EBARA CORP45 patents · 908 citations
- 1350BLACK & DECKER INC48 patents · 1,701 citations
- 1446KERR MACHINE CO107 patents · 826 citations
- 1542U S WELL SERVICES LLC48 patents · 576 citations
- 1638COMMISSARIAT ENERGIE ATOMIQUE16 patents · 668 citations
- 1733SANDEN CORP235 patents · 3,636 citations
- 1829AIR PROD & CHEM27 patents · 691 citations
- 1925DANFOSS AS96 patents · 1,307 citations
- 2021KOMATSU MFG CO LTD70 patents · 1,235 citations
- 2117SAMSUNG ELECTRONICS CO LTD104 patents · 1,701 citations
- 2213HONDA MOTOR CO LTD66 patents · 1,050 citations
- 238KENNAMETAL INC11 patents · 284 citations
- 244MITSUBISHI ELECTRIC CORP124 patents · 1,413 citations
- 251GRACO MINNESOTA INC182 patents · 679 citations
Active· last 5 yrs
Sustained F04B output across the last 5 years
- 199LG ELECTRONICS INC533 patents · 8,665 citations
- 296DEKA PRODUCTS LP245 patents · 16,442 citations
- 392BAXTER INT86 patents · 9,589 citations
- 488NASA21 patents · 2,294 citations
- 583NAT SERVICE ALLIANCE—HOUSTON LLC31 patents · 1,158 citations
- 679TUCSON EMBEDDED SYSTEMS INC8 patents · 1,125 citations
- 775MASIMO CORP8 patents · 762 citations
- 871BJ ENERGY SOLUTIONS LLC94 patents · 2,270 citations
- 967INVACARE CORP7 patents · 622 citations
- 1063FRAUNHOFER GES FORSCHUNG24 patents · 1,379 citations
- 1158IBM24 patents · 1,326 citations
- 1254HONEYWELL INT INC37 patents · 1,298 citations
- 1350YANTAI JEREH PETROLEUM EQUIPMENT & TECHNOLOGIES CO LTD69 patents · 1,557 citations
- 1446UNIV CALIFORNIA26 patents · 1,230 citations
- 1542SPM FLOW CONTROL INC42 patents · 1,727 citations
- 1638PENTAIR WATER POOL & SPA INC30 patents · 675 citations
- 1733HITACHI LTD148 patents · 4,027 citations
- 1829CATERPILLAR INC238 patents · 3,912 citations
- 1925BLUME GEORGE H25 patents · 1,666 citations
- 2021EMERSON CLIMATE TECHNOLOGIES97 patents · 960 citations
- 2117GARDNER DENVER INC10 patents · 694 citations
- 2213CARRIER CORP155 patents · 3,791 citations
- 238GEN ELECTRIC114 patents · 1,448 citations
- 244TYPHON TECH SOLUTIONS LLC24 patents · 599 citations
- 251DENSO CORP154 patents · 1,883 citations
All-time canon
All-time PatentIndex Score in F04B
- 199CALIFORNIA INST OF TECHN59 patents · 6,592 citations
- 296SIMS DELTEC INC21 patents · 9,631 citations
- 392STANFORD RES INST INT36 patents · 8,494 citations
- 488LG ELECTRONICS INC533 patents · 8,665 citations
- 583CALIPER TECHN CORP12 patents · 3,315 citations
- 679EVOLUTION WELL SERVICES LLC12 patents · 2,363 citations
- 775DEKA PRODUCTS LP245 patents · 16,442 citations
- 871KAMEN DEAN L7 patents · 3,152 citations
- 967BAXTER INT86 patents · 9,589 citations
- 1063MEDTRONIC MINIMED INC26 patents · 2,555 citations
- 1158KAMEN DEAN19 patents · 826 citations
- 1254NASA21 patents · 2,294 citations
- 1350US WELL SERVICES LLC18 patents · 3,293 citations
- 1446ABBOTT LAB30 patents · 4,395 citations
- 1542WESTONBRIDGE INT LTD8 patents · 2,562 citations
- 1638NAT SERVICE ALLIANCE—HOUSTON LLC31 patents · 1,158 citations
- 1733TUCSON EMBEDDED SYSTEMS INC8 patents · 1,125 citations
- 1829DEMERS JASON A5 patents · 636 citations
- 1925MASIMO CORP8 patents · 762 citations
- 2021BJ ENERGY SOLUTIONS LLC94 patents · 2,270 citations
- 2117FONG DANIELLE A25 patents · 755 citations
- 2213COLTEC IND INC11 patents · 1,005 citations
- 238INVACARE CORP7 patents · 622 citations
- 244STA RITE IND LLC11 patents · 617 citations
- 251UNIV LELAND STANFORD JUNIOR12 patents · 964 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth