Topic leaderboard
Machines or engines for liquids
Ranked by the PatentIndex Score — a 1–99 percentile within F03B · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest F03B patents became public in the last 2 years — the current frontier
- 199Henry K. Obermeyer9 patents · 304 citations
- 296Benjamin Pietro Filardo13 patents · 259 citations
- 392Brian Lee Moffat63 patents · 284 citations
- 488Garth Alexander Sheldon-Coulson56 patents · 245 citations
- 583Daniel William Place28 patents · 174 citations
- 679Daniel E. Power, Iii9 patents · 477 citations
- 775Michael Linley Fripp8 patents · 171 citations
- 871Ivar Lee Thorson10 patents · 25 citations
- 967Jonathan Forbes8 patents · 37 citations
- 1063Mark Daniel Farb11 patents · 37 citations
- 1158Abraham D. Schneider9 patents · 24 citations
- 1254Matthew Alan Kaskowicz5 patents · 25 citations
- 1350Howard K. Schmidt4 patents · 77 citations
- 1446Peter Roberts8 patents · 27 citations
- 1542Ishay Attar4 patents · 16 citations
- 1638Yaara Kapp-Barnea4 patents · 16 citations
- 1733Michael Baumann12 patents · 22 citations
- 1829Giorgio Bacelli9 patents · 22 citations
- 1925Muhammad Arsalan6 patents · 24 citations
- 2021Shun-Tsung Lu7 patents · 17 citations
- 2117Almond J. Cote4 patents · 26 citations
- 2213Ryan G. Coe6 patents · 15 citations
- 238Matthias Hofmann10 patents · 17 citations
- 244Pukha Lenee-Bluhm4 patents · 19 citations
- 251Zhe Zhang4 patents · 19 citations
Active· last 5 yrs
Sustained F03B output across the last 5 years
- 199Henry K. Obermeyer9 patents · 304 citations
- 296Benjamin Pietro Filardo13 patents · 259 citations
- 392Donald Hollis Gehring8 patents · 267 citations
- 488Brian Lee Moffat63 patents · 284 citations
- 583Garth Alexander Sheldon-Coulson56 patents · 245 citations
- 679Daniel William Place28 patents · 174 citations
- 775Daniel E. Power, Iii9 patents · 477 citations
- 871William Dick6 patents · 285 citations
- 967Yik Hei Sia11 patents · 72 citations
- 1063Roger G. Hine15 patents · 116 citations
- 1158Derek L. Hine13 patents · 91 citations
- 1254Balakrishnan Nair10 patents · 106 citations
- 1350Masahiro Kuroishi7 patents · 106 citations
- 1446Stefan G. Siegel8 patents · 84 citations
- 1542Kyung Soo Han16 patents · 102 citations
- 1638Edwin Newman5 patents · 134 citations
- 1733Paul W. Roos5 patents · 117 citations
- 1829Joseph Horan Prudell7 patents · 54 citations
- 1925Michael Linley Fripp8 patents · 171 citations
- 2021Mark R. Anteau5 patents · 52 citations
- 2117Ethan J. Novek12 patents · 38 citations
- 2213Vassilios Vamvas6 patents · 39 citations
- 238Ivar Lee Thorson10 patents · 25 citations
- 244Jonathan Forbes8 patents · 37 citations
- 251Mark Daniel Farb11 patents · 37 citations
All-time canon
Career PatentIndex Score in F03B
- 199David W. Baarman18 patents · 796 citations
- 296Terry L. Lautzenheiser14 patents · 586 citations
- 392Christopher B. Houghton12 patents · 422 citations
- 488Stephen J. Mcphilliamy12 patents · 422 citations
- 583Thomas Jay Leppien12 patents · 422 citations
- 679Alexander M. Gorlov14 patents · 780 citations
- 775Gaudencio A. Labrador5 patents · 914 citations
- 871George W. Taylor8 patents · 567 citations
- 967Charles B. Carroll6 patents · 515 citations
- 1063Jeffrey L. Cripps14 patents · 296 citations
- 1158David B. Stewart16 patents · 570 citations
- 1254Herbert L. Williams10 patents · 453 citations
- 1350Takao Kuwabara25 patents · 542 citations
- 1446James S. Gerber12 patents · 462 citations
- 1542Richard K. Fisher, Jr.21 patents · 680 citations
- 1638Robert G. Grubb16 patents · 425 citations
- 1733Reed E. Phillips10 patents · 326 citations
- 1829George Spector5 patents · 333 citations
- 1925Warren Finley6 patents · 266 citations
- 2021Edward Pscheidt5 patents · 260 citations
- 2117James G. P. Dehlsen11 patents · 526 citations
- 2213Steven C. Hench10 patents · 242 citations
- 238James R. Beyer8 patents · 254 citations
- 244David F. Thompson4 patents · 730 citations
- 251William J. Mouton, Jr.4 patents · 730 citations
Rising· last 2 yrs
The top-scoring F03B patents made public in the last 2 years
- 199US12398689B1✦ AIWave energy power generation device3 cites · 202580% earned
- 296US12366223B2✦ AIRecirculating inertial hydrodynamic pump and wave engine4 cites · 202567% earned
- 392US12173681B2✦ AIRecirculating inertial hydrodynamic pump and wave engine4 cites · 202470% earned
- 488US12173683B2Pressure-regulating hydrodynamic pump and wave engine4 cites · 202470% earned
- 583US12286198B2Methods and systems for reversible coupling of conduits2 cites · 202461% earned
- 679US12378938B2Fluid connection for a hydromotive machine2 cites · 202467% earned
- 775US12313027B2Methods for harnessing wave energy2 cites · 202467% earned
- 871US11952974B2Wave energy converter4 cites · 202482% earned
- 967US12122489B1Ocean observation platform integrated with highly reliable wave energy generation mechanis2 cites · 202476% earned
- 1063US12196174B1Method and system for calculating stability margin domain of control parameters of hydraul2 cites · 202576% earned
- 1158US12055121B2Apparatus for extracting power from water waves3 cites · 202480% earned
- 1254US11939945B1Adaptive control of wave energy converters2 cites · 202458% earned
- 1350US12130138B2System and method for wave prediction2 cites · 202461% earned
- 1446US12145698B2Methods and systems for free-floating nautical stationkeeping2 cites · 202467% earned
- 1542US12123388B1Hybrid renewable pumped storage hydropower energy storage system2 cites · 202476% earned
- 1638US12392313B2Bodily emission analysis1 cites · 202444% earned
- 1733US12241446B2Reactive, reversible blade turbine for power generation and pumping water1 cites · 202450% earned
- 1829US12304726B2Liquid storage tank and method of producing the same1 cites · 202456% earned
- 1925US12116973B1Ocean multitasking generator1 cites · 202467% earned
- 2021US12404830B1Renewable hybrid turbine system with piezoelectric and solar integration1 cites · 202567% earned
- 2117US12234800B2Offshore floater system2 cites · 202476% earned
- 2213US11879422B1Buoyancy force energy system (BFES)2 cites · 202476% earned
- 238US12163501B2Water-driven elongated-conveyor turbine and method of using a water-driven elongated-conve1 cites · 202446% earned
- 244US12326133B2Systems and methods for energy harvest1 cites · 202450% earned
- 251US12196172B2Wave energy capture and conversion device1 cites · 202467% earned
Active· last 5 yrs
The top-scoring F03B patents of the last 5 years
- 199US11891980B2✦ AICoordinating blade orientation to optimize cluster power output13 cites · 202377% earned
- 296US11831164B2✦ AIDual channel controller for applying MPPT to an array of turbines12 cites · 202376% earned
- 392US11834940B1✦ AISystem and method of controlling single or dual pump operation11 cites · 202388% earned
- 488US11384727B2Inertial hydrodynamic pump and wave engine15 cites · 202172% earned
- 583US12398689B1Wave energy power generation device3 cites · 202580% earned
- 679US11542909B1Automatic control valve with micro-hydro generator9 cites · 202387% earned
- 775US11391261B2Hydrogen production and conveyance system10 cites · 202170% earned
- 871US12173682B2Recirculating inertial hydrodynamic pump and wave engine4 cites · 202467% earned
- 967US12173681B2Recirculating inertial hydrodynamic pump and wave engine4 cites · 202470% earned
- 1063US11846265B1Pressure-regulating hydrodynamic pump and wave engine6 cites · 202374% earned
- 1158US10941747B1Gravitational vortex variable water flow energy generating system including adjustable hei12 cites · 202188% earned
- 1254US11449082B1Self powered fluid shutoff apparatus9 cites · 202287% earned
- 1350US11286898B2Low density fluid displacement to store or generate power7 cites · 202186% earned
- 1446US11480147B2Eccentrically rotating mass turbine7 cites · 202186% earned
- 1542US11421645B1Kinetic energy capture, storage, and conversion device6 cites · 202285% earned
- 1638US11592004B2Vertical shaft wind power generation device and hydropower generation device accommodated 6 cites · 202185% earned
- 1733US11404935B2System for energy storage and electrical power generation7 cites · 202179% earned
- 1829US11835023B2Hydrostatically compensated caes system having an elevated compensation liquid reservoir7 cites · 202186% earned
- 1925US11162249B2Method for activating a service, method for activating a fire hydrant, associated device a8 cites · 202186% earned
- 2021US11561181B2Bodily emission analysis5 cites · 202167% earned
- 2117US10900540B1Mechanical renewable green energy production6 cites · 202171% earned
- 2213US12286198B2Methods and systems for reversible coupling of conduits2 cites · 202461% earned
- 238US12061083B2System and method for wave prediction6 cites · 202274% earned
- 244US12378938B2Fluid connection for a hydromotive machine2 cites · 202467% earned
- 251US11767090B2Systems and methods for integrated wave power charging for ocean vehicles5 cites · 202177% earned
All-time canon
The defining F03B patents of the whole record
- 199US4720640A✦ AIFluid powered electrical generator598 cites · 198895% earned
- 296US4410054A✦ AIWell drilling tool with diamond radial/thrust bearings448 cites · 198395% earned
- 392US6327994B1✦ AIScavenger energy converter system its new applications and its control systems406 cites · 200195% earned
- 488US10060473B2Energy conversion systems and methods399 cites · 201792% earned
- 583US6293121B1Water-mist blower cooling system and its new applications359 cites · 200194% earned
- 679US3986787ARiver turbine313 cites · 197694% earned
- 775US6020653ASubmerged reciprocating electric generator274 cites · 200094% earned
- 871US6091161AMethod of controlling operating depth of an electricity-generating device having a tethere272 cites · 200094% earned
- 967US4740711APipeline built-in electric power generating set251 cites · 198894% earned
- 1063US4387318APiezoelectric fluid-electric generator242 cites · 198394% earned
- 1158US4868408APortable water-powered electric generator242 cites · 198994% earned
- 1254US5440176AOcean current power generator232 cites · 199594% earned
- 1350US6109863ASubmersible appartus for generating electricity and associated method229 cites · 200094% earned
- 1446US3939356AHydro-air storage electrical generation system222 cites · 197694% earned
- 1542US4731545APortable self-contained power conversion unit216 cites · 198894% earned
- 1638US4260901AWave operated electrical generation system211 cites · 198194% earned
- 1733US4850190ASubmerged ocean current electrical generator and method for hydrogen production207 cites · 198994% earned
- 1829US4389843AWater wave energy transducer205 cites · 198394% earned
- 1925US4781023AWave driven power generation system203 cites · 198894% earned
- 2021US4219303ASubmarine turbine power plant199 cites · 198094% earned
- 2117US4228360AWave motion apparatus198 cites · 198094% earned
- 2213US4443707AHydro electric generating system195 cites · 198494% earned
- 238US6531788B2Submersible electrical power generating plant192 cites · 200294% earned
- 244US4352025ASystem for generation of electrical power190 cites · 198294% earned
- 251US4383182AUnderwater power generator187 cites · 198394% earned
Rising· last 2 yrs
Assignees whose newest F03B patents became public in the last 2 years — the current frontier
- 199OBERMEYER HENRY K8 patents · 243 citations
- 296LONE GULL HOLDINGS LTD59 patents · 213 citations
- 392US NAVY9 patents · 199 citations
- 488OCEANA ENERGY CO8 patents · 461 citations
- 583SCHLUMBERGER TECHNOLOGY CORP20 patents · 171 citations
- 679KASKOWICZ MATTHEW ALAN5 patents · 25 citations
- 775DRAGIC MILE9 patents · 30 citations
- 871HALLIBURTON ENERGY SERVICES INC20 patents · 30 citations
- 967NAT TECH & ENG SOLUTIONS SANDIA LLC13 patents · 32 citations
- 1063AQUANTIS INC6 patents · 33 citations
- 1158OUTSENSE DIAGNOSTICS LTD4 patents · 16 citations
- 1254VOITH PATENT GMBH20 patents · 22 citations
- 1350ALLIANCE SUSTAINABLE ENERGY9 patents · 17 citations
- 1446SAUDI ARABIAN OIL CO8 patents · 24 citations
- 1542SKF AB11 patents · 19 citations
- 1638LU SHUN TSUNG7 patents · 17 citations
- 1733AJC INNOVATIONS LLC4 patents · 26 citations
- 1829COLUMBIA POWER TECH INC4 patents · 19 citations
- 1925GE RENEWABLE TECH21 patents · 8 citations
- 2021SUDDABY LOUBERT S9 patents · 11 citations
- 2117FLOWER TURBINES INC9 patents · 13 citations
- 2213IBM5 patents · 9 citations
- 238CUMMINGS MICHAEL SCOT5 patents · 6 citations
- 244HITACHI MITSUBISHI HYDRO CORPORATION5 patents · 15 citations
- 251P TECH LLC3 patents · 7 citations
Active· last 5 yrs
Sustained F03B output across the last 5 years
- 199UNIV NORTHEASTERN12 patents · 608 citations
- 296OBERMEYER HENRY K8 patents · 243 citations
- 392LONE GULL HOLDINGS LTD59 patents · 213 citations
- 488GEN ELECTRIC19 patents · 246 citations
- 583US NAVY9 patents · 199 citations
- 679SIA YIK HEI11 patents · 72 citations
- 775GEHRING DONALD HOLLIS6 patents · 219 citations
- 871PLIANT ENERGY SYSTEMS LLC9 patents · 142 citations
- 967OCEANA ENERGY CO8 patents · 461 citations
- 1063TOTO LTD7 patents · 154 citations
- 1158OSCILLA POWER INC18 patents · 112 citations
- 1254HAN KYUNG-SOO6 patents · 52 citations
- 1350SCHLUMBERGER TECHNOLOGY CORP20 patents · 171 citations
- 1446TOSHIBA KK30 patents · 95 citations
- 1542LOCKHEED CORP6 patents · 107 citations
- 1638LIQUID ROBOTICS INC11 patents · 32 citations
- 1733ANTEAU MARK R5 patents · 52 citations
- 1829DIFFERENTIAL DYNAMICS CORP10 patents · 50 citations
- 1925VAMVAS VASSILIOS6 patents · 39 citations
- 2021NTN TOYO BEARING CO LTD9 patents · 106 citations
- 2117VERNO HOLDINGS LLC8 patents · 30 citations
- 2213KASKOWICZ MATTHEW ALAN5 patents · 25 citations
- 238UNIV DALIAN TECH14 patents · 38 citations
- 244DRAGIC MILE9 patents · 30 citations
- 251AW-ENERGY OY9 patents · 65 citations
All-time canon
All-time PatentIndex Score in F03B
- 199ACCESS BUSINESS GROUP INT LLC16 patents · 776 citations
- 296UNIV NORTHEASTERN12 patents · 608 citations
- 392OCEAN POWER TECHNOLOGIES INC28 patents · 1,724 citations
- 488MAURER ENG6 patents · 708 citations
- 583HITACHI LTD67 patents · 1,095 citations
- 679VOITH HYDRO INC19 patents · 666 citations
- 775PHILLIPS REED E7 patents · 235 citations
- 871FUJI ELECTRIC CO LTD6 patents · 457 citations
- 967ESCHER WYSS LTD8 patents · 337 citations
- 1063VOITH SIEMENS HYDRO POWER9 patents · 277 citations
- 1158SECRETARY ENERGY BRIT8 patents · 297 citations
- 1254INDEPENDENT NATURAL RESOURCES7 patents · 202 citations
- 1350GUTIERREZ ATENCIO FRANCISCO J6 patents · 255 citations
- 1446CRIPPS JEFFREY L10 patents · 140 citations
- 1542OBERMEYER HENRY K8 patents · 243 citations
- 1638SANKYO SEIKI SEISAKUSHO KK5 patents · 203 citations
- 1733ATENCIO FRANCISCO J G6 patents · 216 citations
- 1829LONE GULL HOLDINGS LTD59 patents · 213 citations
- 1925GEN ELECTRIC19 patents · 246 citations
- 2021ALLIS CHALMERS22 patents · 301 citations
- 2117UNIV DELAWARE4 patents · 301 citations
- 2213SRYBNIK SIMON5 patents · 151 citations
- 238CRIPTONIC ENERGY SOLUTIONS INC4 patents · 156 citations
- 244US NAVY9 patents · 199 citations
- 251SIA YIK HEI11 patents · 72 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth