Topic leaderboard
Measuring volume, flow or liquid level
Ranked by the PatentIndex Score — a 1–99 percentile within G01F · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest G01F patents became public in the last 2 years — the current frontier
- 199Dean Kamen162 patents · 10,341 citations
- 296Larry B. Gray166 patents · 2,496 citations
- 392Adrian Bennett56 patents · 1,256 citations
- 488Ian Murison57 patents · 1,256 citations
- 583Kaveh Memari56 patents · 1,256 citations
- 679Stephen Marsh58 patents · 1,256 citations
- 775Russell H. Beavis71 patents · 1,089 citations
- 871John M. Kerwin87 patents · 2,898 citations
- 967Colin H. Murphy55 patents · 2,519 citations
- 1063Daniel L. Gysling101 patents · 4,142 citations
- 1158Heiner Ophardt36 patents · 1,671 citations
- 1254Wolfgang Drahm80 patents · 1,858 citations
- 1350Ennio Bitto81 patents · 1,597 citations
- 1446Eric Yeaton23 patents · 185 citations
- 1542Richard J. Lanigan32 patents · 622 citations
- 1638James White21 patents · 462 citations
- 1733Richard Whalley21 patents · 462 citations
- 1829Jeffrey P. Fugere19 patents · 616 citations
- 1925Daniel T. Mudd27 patents · 640 citations
- 2021Gerhard Eckert32 patents · 532 citations
- 2117Siddarth Satish12 patents · 215 citations
- 2213Kevin J. Miller11 patents · 213 citations
- 238Jamie Speldrich39 patents · 816 citations
- 244William S. Valentine14 patents · 256 citations
- 251Andrew Jones22 patents · 379 citations
Active· last 5 yrs
Sustained G01F output across the last 5 years
- 199Dean Kamen162 patents · 10,341 citations
- 296Larry B. Gray166 patents · 2,496 citations
- 392Adrian Bennett56 patents · 1,256 citations
- 488Ian Murison57 patents · 1,256 citations
- 583Kaveh Memari56 patents · 1,256 citations
- 679Stephen Marsh58 patents · 1,256 citations
- 775Russell H. Beavis71 patents · 1,089 citations
- 871John M. Kerwin87 patents · 2,898 citations
- 967Derek G. Kane49 patents · 2,092 citations
- 1063Colin H. Murphy55 patents · 2,519 citations
- 1158Manus P. Henry72 patents · 1,539 citations
- 1254Bob D. Peret22 patents · 1,642 citations
- 1350Christopher C. Langenfeld17 patents · 777 citations
- 1446Michael J. Slate17 patents · 777 citations
- 1542Daniel L. Gysling101 patents · 4,142 citations
- 1638Michael S. Place16 patents · 604 citations
- 1733Heiner Ophardt36 patents · 1,671 citations
- 1829Wolfgang Drahm80 patents · 1,858 citations
- 1925Robert E. Higashi24 patents · 1,556 citations
- 2021Ennio Bitto81 patents · 1,597 citations
- 2117Charles Winston12 patents · 895 citations
- 2213Eric Yeaton23 patents · 185 citations
- 238Brian H. Yoo10 patents · 586 citations
- 244Alfred Rieder118 patents · 1,486 citations
- 251Richard J. Lanigan32 patents · 622 citations
All-time canon
Career PatentIndex Score in G01F
- 199Dean Kamen162 patents · 10,341 citations
- 296Reid M. Rubsamen16 patents · 4,207 citations
- 392Stephen J. Brown8 patents · 3,998 citations
- 488David Ferrin Pare, Jr.13 patents · 3,904 citations
- 583Jonathan Alexander Lee13 patents · 3,904 citations
- 679Ned Hoffman13 patents · 3,904 citations
- 775Larry B. Gray166 patents · 2,496 citations
- 871Adrian Bennett56 patents · 1,256 citations
- 967Ian Murison57 patents · 1,256 citations
- 1063Kaveh Memari56 patents · 1,256 citations
- 1158Stephen Marsh58 patents · 1,256 citations
- 1254David S. Breed41 patents · 4,775 citations
- 1350Douglas F. Devries8 patents · 1,487 citations
- 1446Malcolm Williams10 patents · 1,351 citations
- 1542Michael J. Cegielski7 patents · 1,341 citations
- 1638Michael Holmes7 patents · 1,341 citations
- 1733Warner V. Graves, Jr.7 patents · 1,341 citations
- 1829Russell H. Beavis71 patents · 1,089 citations
- 1925Eyal Doron7 patents · 2,728 citations
- 2021Yariv Porat5 patents · 2,440 citations
- 2117Carl Ritson8 patents · 1,973 citations
- 2213David E. Goodman5 patents · 1,586 citations
- 238Wendell C. Johnson22 patents · 3,569 citations
- 244Wilbur E. Duvall22 patents · 3,569 citations
- 251Joseph B. Seale6 patents · 1,827 citations
Rising· last 2 yrs
The top-scoring G01F patents made public in the last 2 years
- 199US11960254B1✦ AIAnomaly detection and evaluation for smart water system management9 cites · 202487% earned
- 296US12128006B2✦ AIApparatus, system and method for fluid delivery5 cites · 202465% earned
- 392US12128009B1✦ AISystems and methods for bottle apparatuses, container assemblies, and dispensing apparatus6 cites · 202478% earned
- 488US12356886B2Agricultural material distribution anomaly detection and control system2 cites · 202461% earned
- 583US12044604B2Method and smart gas internet of things (IoT) system for metering anti-interference of gas3 cites · 202472% earned
- 679US12140275B2Method for gas gate station monitoring based on smart gas platform and internet of things 2 cites · 202467% earned
- 775US12146825B1System and methods for assessment of scale deposits in pipelines2 cites · 202467% earned
- 871US12129103B1Apparatus and method for storing, measuring and dispensing semi-solid food substances2 cites · 202476% earned
- 967US12422295B2System and method for determining content utilizing externally mounted container monitorin1 cites · 202567% earned
- 1063US11925949B1Fluid metering component and spraying apparatus thereof5 cites · 202484% earned
- 1158US12319626B2Apparatus for delivery of carbon dioxide to a concrete mix in a mixer and determining flow2 cites · 202455% earned
- 1254USD1011511SFluid delivery device3 cites · 202461% earned
- 1350US12215995B2Ingredient dispensers1 cites · 202450% earned
- 1446US12203799B2Methods and industrial internet of things systems for factory testing of ultrasonic gas me1 cites · 202456% earned
- 1542US12264943B2Method and system for predicting accuracy risk of smart gas meter based on internet of thi1 cites · 202456% earned
- 1638US12044560B1High pressure Magmeter and method of assembly3 cites · 202472% earned
- 1733US12123889B2Apparatus and method for measuring a parameter of a process fluid2 cites · 202476% earned
- 1829US12259265B1Apparatus and method for storing, measuring and dispensing semi-solid food substances1 cites · 202567% earned
- 1925US12117329B1Container monitoring system and method thereof1 cites · 202467% earned
- 2021US12228525B1System and method for determining alcohol content utilizing container monitoring system1 cites · 202567% earned
- 2117US12228445B1System and method for determining alcohol content within container utilizing container mon1 cites · 202567% earned
- 2213US12172882B2Canning funnel with headspace gauge2 cites · 202476% earned
- 238US12405140B1Adjustable venturi for multiphase flowmeter1 cites · 202567% earned
- 244US12169140B1Compostable scoop and method of making same1 cites · 202467% earned
- 251US11873160B1Systems and methods for remotely controlling proppant discharge system5 cites · 202484% earned
Active· last 5 yrs
The top-scoring G01F patents of the last 5 years
- 199US10966349B1✦ AITwo-phase immersion cooling apparatus with active vapor management71 cites · 202186% earned
- 296US11402248B2✦ AIFlow sensor devices and systems25 cites · 202282% earned
- 392US11339887B2✦ AIFlow meter and related method25 cites · 202172% earned
- 488US11933650B2Air detection system and method for detecting air in a pump of an infusion system15 cites · 202376% earned
- 583US11047496B1Monitoring system for detecting leaks using a system of flow rate sensors and smart valves26 cites · 202183% earned
- 679US11634314B1Dosing accuracy13 cites · 202388% earned
- 775US11703362B2Overmolded paddlewheel for a flow meter16 cites · 202384% earned
- 871US11213846B1Systems and methods for a product system of an agricultural applicator14 cites · 202267% earned
- 967US11389377B2Apparatus, system and method for fluid delivery14 cites · 202174% earned
- 1063US11137780B1Fluid distribution manifold14 cites · 202177% earned
- 1158USD997224STransfer robot11 cites · 202388% earned
- 1254US10889424B1Portable beverage container systems and methods for adjusting the composition of a beverag19 cites · 202172% earned
- 1350US11281240B1Resource consumption measurement system and method19 cites · 202274% earned
- 1446US11768092B2Flow sensor devices and systems13 cites · 202277% earned
- 1542US11066802B1Foldable and/or collapsible plastic/composite utility enclosure13 cites · 202188% earned
- 1638US11519770B1Systems and methods for tracking fuel deliveries10 cites · 202281% earned
- 1733US11960254B1Anomaly detection and evaluation for smart water system management9 cites · 202487% earned
- 1829US11703365B2Automatic fluid flow system with push-button connection11 cites · 202288% earned
- 1925US11911160B2Automated urine output measurement systems and methods thereof14 cites · 202183% earned
- 2021US11359950B2Reduced length valve assembly with ultrasonic flow sensor14 cites · 202183% earned
- 2117US11008134B2Foldable and/or collapsible plastic/composite utility enclosures13 cites · 202188% earned
- 2213US10969262B1Filtering container with time-based capacitive flow monitoring11 cites · 202188% earned
- 238US11499852B1Device for monitoring underwater surface overflow seepage of landslide and monitoring meth9 cites · 202287% earned
- 244US11639539B2Systems and methods for monitoring metal recovery systems7 cites · 202268% earned
- 251US11590376B2Infrastructure monitoring devices, systems, and methods10 cites · 202170% earned
All-time canon
The defining G01F patents of the whole record
- 199US5431654A✦ AIBone cement injector1,626 cites · 199596% earned
- 296US6239724B1✦ AISystem and method for telemetrically providing intrabody spatial position1,313 cites · 200195% earned
- 392US7661448B2✦ AIAutomatic liquid dispenser and refrigerator with the same875 cites · 200895% earned
- 488US5404871ADelivery of aerosol medications for inspiration858 cites · 199588% earned
- 583US5088515AValve system with removable fluid interface850 cites · 199295% earned
- 679US5562002APositive displacement piston flow meter with damping assembly819 cites · 199695% earned
- 775US6440725B1Integrated fluid manipulation cartridge777 cites · 200291% earned
- 871US5845000AOptical identification and monitoring system using pattern recognition for use with vehicl718 cites · 199892% earned
- 967US5873835AIntravascular pressure and flow sensor711 cites · 199995% earned
- 1063US5037018AAutomatic feeder696 cites · 199195% earned
- 1158US6119710AMethod for wide range gas flow system with real time flow measurement and correction684 cites · 200092% earned
- 1254US6442465B2Vehicular component control systems and methods616 cites · 200195% earned
- 1350US4808161APressure-measurement flow control system614 cites · 198988% earned
- 1446US7345623B2Reflection free launcher for electromagnetic guide wire603 cites · 200795% earned
- 1542US6971274B2Immersible thermal mass flow meter601 cites · 200592% earned
- 1638US6916159B2Device and method employing shape memory alloy601 cites · 200492% earned
- 1733US6068615AInductance-based dose measurement in syringes600 cites · 200095% earned
- 1829US4827430AFlow measurement system592 cites · 198995% earned
- 1925US6874480B1Flow meter590 cites · 200595% earned
- 2021US5670031AElectrochemical sensor575 cites · 199795% earned
- 2117US5866795ALiquid flow rate estimation and verification by direct liquid measurement564 cites · 199995% earned
- 2213US6113578AOptical dose measurements in syringes560 cites · 200092% earned
- 238US5596150ACapacitance probe for fluid flow and volume measurements554 cites · 199795% earned
- 244US6735506B2Telematics system544 cites · 200295% earned
- 251US5720733AApparatus for determining and recording injection doses in syringes using electrical capac531 cites · 199895% earned
Rising· last 2 yrs
Assignees whose newest G01F patents became public in the last 2 years — the current frontier
- 199DEKA PRODUCTS LP199 patents · 8,053 citations
- 296UNIV CALIFORNIA39 patents · 4,034 citations
- 392MICRO MOTION INC316 patents · 8,398 citations
- 488FLOWTEC AG481 patents · 7,085 citations
- 583SEIKO EPSON CORP62 patents · 704 citations
- 679GRIESHABER VEGA KG260 patents · 1,986 citations
- 775BECTON DICKINSON CO38 patents · 741 citations
- 871SCHLUMBERGER TECHNOLOGY CORP179 patents · 3,861 citations
- 967HONEYWELL INT INC242 patents · 3,040 citations
- 1063SIEMENS AG132 patents · 2,305 citations
- 1158MKS INSTR INC67 patents · 1,810 citations
- 1254BOEING CO87 patents · 1,134 citations
- 1350CATERPILLAR INC33 patents · 666 citations
- 1446DEERE & CO73 patents · 856 citations
- 1542PROCTER & GAMBLE34 patents · 700 citations
- 1638MUELLER INT LLC41 patents · 410 citations
- 1733AIR PROD & CHEM21 patents · 524 citations
- 1829BADGER METER INC51 patents · 1,067 citations
- 1925TOYOTA MOTOR CO LTD44 patents · 720 citations
- 2021ROSEMOUNT AEROSPACE INC50 patents · 530 citations
- 2117OREAL24 patents · 419 citations
- 2213APPLIED MATERIALS INC48 patents · 768 citations
- 238HEWLETT PACKARD DEVELOPMENT CO82 patents · 316 citations
- 244ROSEMOUNT TANK RADAR AB131 patents · 866 citations
- 251SAMSUNG ELECTRONICS CO LTD53 patents · 433 citations
Active· last 5 yrs
Sustained G01F output across the last 5 years
- 199DEKA PRODUCTS LP199 patents · 8,053 citations
- 296UNIV CALIFORNIA39 patents · 4,034 citations
- 392MICRO MOTION INC316 patents · 8,398 citations
- 488FLOWTEC AG481 patents · 7,085 citations
- 583ROSEMOUNT INC197 patents · 5,925 citations
- 679XEROX CORP27 patents · 1,485 citations
- 775SEIKO EPSON CORP62 patents · 704 citations
- 871CANON KK40 patents · 1,534 citations
- 967GRIESHABER VEGA KG260 patents · 1,986 citations
- 1063BECTON DICKINSON CO38 patents · 741 citations
- 1158SCHLUMBERGER TECHNOLOGY CORP179 patents · 3,861 citations
- 1254NORDSON CORP40 patents · 1,134 citations
- 1350GEN ELECTRIC182 patents · 3,028 citations
- 1446HONEYWELL INT INC242 patents · 3,040 citations
- 1542COCA COLA CO30 patents · 1,536 citations
- 1638SIEMENS AG132 patents · 2,305 citations
- 1733WHIRLPOOL CO20 patents · 726 citations
- 1829FISHER & PAYKEL HEALTHCARE LTD30 patents · 445 citations
- 1925MKS INSTR INC67 patents · 1,810 citations
- 2021MEDTRONIC INC16 patents · 779 citations
- 2117BAXTER INT13 patents · 1,067 citations
- 2213SIMMONDS PRECISION PRODUCTS83 patents · 1,897 citations
- 238FUJI ELECTRIC CO LTD38 patents · 1,287 citations
- 244BOEING CO87 patents · 1,134 citations
- 251CATERPILLAR INC33 patents · 666 citations
All-time canon
All-time PatentIndex Score in G01F
- 199KAMEN DEAN L7 patents · 3,152 citations
- 296ARADIGM CORP16 patents · 4,207 citations
- 392DEKA PRODUCTS LP199 patents · 8,053 citations
- 488BEYOND TWENTY LTD26 patents · 1,183 citations
- 583REMON MEDICAL TECHNOLOGIES LTD7 patents · 2,728 citations
- 679BIRD PRODUCTS CORP6 patents · 1,122 citations
- 775AUTOMOTIVE TECH INT26 patents · 3,775 citations
- 871KAMEN DEAN20 patents · 531 citations
- 967INDIVOS CORP7 patents · 1,748 citations
- 1063FISHER & PAYKEL5 patents · 954 citations
- 1158UNIV CALIFORNIA39 patents · 4,034 citations
- 1254HONEYWELL INC69 patents · 3,911 citations
- 1350MICRO MOTION INC316 patents · 8,398 citations
- 1446PANAMETRICS39 patents · 4,138 citations
- 1542CARDIOMEMS INC7 patents · 815 citations
- 1638FLOWTEC AG481 patents · 7,085 citations
- 1733CARDIOMETRICS INC6 patents · 1,192 citations
- 1829INVENSYS SYS INC91 patents · 1,487 citations
- 1925WEATHERFORD LAMB34 patents · 2,301 citations
- 2021ROSEMOUNT INC197 patents · 5,925 citations
- 2117ABBOTT LAB22 patents · 1,533 citations
- 2213XEROX CORP27 patents · 1,485 citations
- 238SEIKO EPSON CORP62 patents · 704 citations
- 244CANON KK40 patents · 1,534 citations
- 251SENETICS INC12 patents · 1,369 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth