Topic leaderboard
Fluid-pressure systems & actuators
Ranked by the PatentIndex Score — a 1–99 percentile within F15B · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest F15B patents became public in the last 2 years — the current frontier
- 199Christopher A. Lins18 patents · 124 citations
- 296Andrew J. Kopel15 patents · 118 citations
- 392Chris W. Sydow15 patents · 118 citations
- 488Chad R. Taszarek15 patents · 118 citations
- 583David J. Thompson15 patents · 118 citations
- 679Glen W. Davidson15 patents · 118 citations
- 775Steve J. Wrobel15 patents · 118 citations
- 871William M. Blenkush15 patents · 118 citations
- 967Guy J. Lapointe14 patents · 154 citations
- 1063Kelcy Jake Foster14 patents · 154 citations
- 1158Mark S. Nowell12 patents · 152 citations
- 1254Brandon Scott Ayres13 patents · 144 citations
- 1350Christopher Todd Barnett13 patents · 144 citations
- 1446Michael Eugene May11 patents · 142 citations
- 1542Clive Tucker12 patents · 146 citations
- 1638Pengfei Ma45 patents · 458 citations
- 1733Norbert Weber22 patents · 221 citations
- 1829Lee Allen Tobias13 patents · 70 citations
- 1925Robert Ronald Evans13 patents · 70 citations
- 2021Sohrab John Talebian13 patents · 70 citations
- 2117Yasutaka Tsuruga51 patents · 257 citations
- 2213Michael Patrick Murphy17 patents · 111 citations
- 238John Aaron Saunders20 patents · 113 citations
- 244John K. Apostolides14 patents · 113 citations
- 251Martin Heusser17 patents · 144 citations
Active· last 5 yrs
Sustained F15B output across the last 5 years
- 199Eric P. Hamkins13 patents · 396 citations
- 296Marco Giovanardi12 patents · 186 citations
- 392Johannes Schneider9 patents · 182 citations
- 488Zackary Martin Anderson8 patents · 181 citations
- 583David Klein12 patents · 118 citations
- 679Genroku Sugiyama51 patents · 1,134 citations
- 775Gary M. Lindahl12 patents · 230 citations
- 871Christopher A. Lins18 patents · 124 citations
- 967Andrew J. Kopel15 patents · 118 citations
- 1063Chris W. Sydow15 patents · 118 citations
- 1158Chad R. Taszarek15 patents · 118 citations
- 1254David J. Thompson15 patents · 118 citations
- 1350Glen W. Davidson15 patents · 118 citations
- 1446Steve J. Wrobel15 patents · 118 citations
- 1542William M. Blenkush15 patents · 118 citations
- 1638Hiroshi Mizukami13 patents · 253 citations
- 1733Guy J. Lapointe14 patents · 154 citations
- 1829Kelcy Jake Foster14 patents · 154 citations
- 1925Mark S. Nowell12 patents · 152 citations
- 2021Brandon Scott Ayres13 patents · 144 citations
- 2117Christopher Todd Barnett13 patents · 144 citations
- 2213Michael Eugene May11 patents · 142 citations
- 238Lonnie J. Devier7 patents · 227 citations
- 244Clive Tucker12 patents · 146 citations
- 251Tsutomu Shinohara10 patents · 234 citations
All-time canon
Career PatentIndex Score in F15B
- 199Mark A. Burns12 patents · 1,939 citations
- 296Danielle A. Fong41 patents · 888 citations
- 392Edwin P. Berlin, Jr.41 patents · 888 citations
- 488Stephen E. Crane41 patents · 888 citations
- 583Kartikeya Mahalatkar19 patents · 722 citations
- 679Todd Bowers19 patents · 722 citations
- 775Yongxi Hou19 patents · 722 citations
- 871Amirhossein Pourmousa Abkenar13 patents · 679 citations
- 967Karl E. Stahlkopf16 patents · 603 citations
- 1063Thomas Ohnstein7 patents · 1,573 citations
- 1158Brian N. Johnson7 patents · 986 citations
- 1254Benjamin R. Bollinger30 patents · 998 citations
- 1350Troy O. Mcbride28 patents · 871 citations
- 1446Carlos H. Mastrangelo5 patents · 1,411 citations
- 1542Kurt Stoll104 patents · 3,177 citations
- 1638Allan I. Krauter8 patents · 629 citations
- 1733Dwight B. Stephenson21 patents · 978 citations
- 1829Shoji Tozawa9 patents · 1,656 citations
- 1925Oded Eddie Sturman17 patents · 749 citations
- 2021Michio Yamaji22 patents · 767 citations
- 2117Nobukazu Ikeda6 patents · 486 citations
- 2213Tadahiro Ohmi6 patents · 486 citations
- 238Brett W. Bouldin5 patents · 414 citations
- 244Daniel George Purkis7 patents · 406 citations
- 251Henry M. Paynter7 patents · 571 citations
Rising· last 2 yrs
The top-scoring F15B patents made public in the last 2 years
- 199US12083848B1✦ AISingle axle roll control system with dual impeller pump arrangement8 cites · 202486% earned
- 296US12000504B1✦ AIMultifunctional electro-hydraulic flow control valve and flow control method8 cites · 202486% earned
- 392US11994121B1✦ AIPiston in piston variable displacement hydraulic device5 cites · 202477% earned
- 488US12055124B1Four-quadrant radial piston hydraulic device and working method thereof3 cites · 202480% earned
- 583US12404847B2Reciprocating piston pump4 cites · 202470% earned
- 679US12000415B1Pneumatic operation and self-alignment of linear actuator4 cites · 202475% earned
- 775US11939995B1Controlling multiple eversion-based actuators4 cites · 202475% earned
- 871US12031559B1Integrated electro-hydraulic unit4 cites · 202482% earned
- 967US12196200B2Pump rod and driving link with side-load reducing configuration2 cites · 202444% earned
- 1063US12208418B2Manifold for a hydraulic vibration generating device or hydraulic motor3 cites · 202467% earned
- 1158US12338813B2Liquid cooled plunger system2 cites · 202561% earned
- 1254US12415416B2Modular electronic power take-off unit for a refuse vehicle with high voltage connection p2 cites · 202467% earned
- 1350US12276289B1Hydraulic cylinder top end cap2 cites · 202576% earned
- 1446US12305672B1Hydraulic cylinder bottom end cap2 cites · 202576% earned
- 1542US12180682B2Hydraulic control system4 cites · 202482% earned
- 1638US12492625B1Integrated junction and check valve assemblies for hydraulic fracturing system manifolds a1 cites · 202567% earned
- 1733US12297705B1Support mechanism of self-adaptive traction robot for complex wellbore and control method 2 cites · 202576% earned
- 1829US12203492B2Hydraulically amplified self-healing electrostatic (HASEL) transducers2 cites · 202455% earned
- 1925US12338733B1Method and apparatus for downhole fluid microsample collection with staged hydraulic actua2 cites · 202561% earned
- 2021US12180681B2Construction machine2 cites · 202467% earned
- 2117US12031614B1Large scale hydraulic cylinder assembly, disassembly and maintenance system2 cites · 202467% earned
- 2213US12313092B2Systems and methods for grouping hydraulic functions for an agricultural implement2 cites · 202576% earned
- 238US12172307B2Low-power hydraulic valve, and applications thereof in robot systems2 cites · 202476% earned
- 244US12552340B2Method for detecting a safe state of a valve of a hydraulic system2 cites · 202576% earned
- 251US11889790B1Variable displacement motor control system3 cites · 202480% earned
Active· last 5 yrs
The top-scoring F15B patents of the last 5 years
- 199US11566641B1✦ AIShear thickening fluid enabled object movement control mechanism26 cites · 202376% earned
- 296US11566713B2✦ AIValve seat assembly having mating surfaces with a reverse taper angle24 cites · 202290% earned
- 392US11828308B1✦ AIShear thickening fluid based object control mechanism19 cites · 202381% earned
- 488US11486421B2Hydraulically amplified self-healing electrostatic transducers harnessing zipping mechanis19 cites · 202190% earned
- 583US12083848B1Single axle roll control system with dual impeller pump arrangement8 cites · 202486% earned
- 679US12000504B1Multifunctional electro-hydraulic flow control valve and flow control method8 cites · 202486% earned
- 775US11530697B2Displacement pump mounting and retention10 cites · 202263% earned
- 871US11353009B1Intermuscular ridged boards for artificial muscle devices under heavy lift conditions12 cites · 202282% earned
- 967US11592037B1Hybrid actuation devices including alignment aids12 cites · 202382% earned
- 1063US11274526B2System and method for electro-hydraulic actuation of downhole tools18 cites · 202189% earned
- 1158US11133775B1Systems for damping a solar photovoltaic array tracker11 cites · 202169% earned
- 1254US11408452B2Hydraulically amplified self-healing electrostatic actuators11 cites · 202174% earned
- 1350US11261582B1System and method for controlling hydraulic fluid flow within a work vehicle using flow co11 cites · 202288% earned
- 1446US11143315B2Sealing high pressure flow devices11 cites · 202171% earned
- 1542US11143211B1System and method for controlling hydraulic fluid flow within a work vehicle9 cites · 202187% earned
- 1638US11536378B2Sealing high pressure flow devices7 cites · 202270% earned
- 1733US11826782B1Manifold for a hydraulic vibration generating device or hydraulic motor5 cites · 202372% earned
- 1829US11994121B1Piston in piston variable displacement hydraulic device5 cites · 202477% earned
- 1925US11624376B2Hybrid actuation devices with electrostatic clutches8 cites · 202380% earned
- 2021US11644116B1Unitized valve body having flow passages8 cites · 202380% earned
- 2117US11294402B1Segmented fluid end assembly11 cites · 202288% earned
- 2213US12055124B1Four-quadrant radial piston hydraulic device and working method thereof3 cites · 202480% earned
- 238US11098822B2Arrangement with on/off valve, pneumatic actuator, magnetic valve and function monitoring 9 cites · 202187% earned
- 244US10954077B1Conveyor belt cleaning apparatus9 cites · 202187% earned
- 251US11246254B1Negative downforce system for ground engaging machinery10 cites · 202281% earned
All-time canon
The defining F15B patents of the whole record
- 199US5341724A✦ AIPneumatic telescoping cylinder and method1,513 cites · 199495% earned
- 296US6512360B1✦ AISelf-induction-type stroke sensor1,353 cites · 200395% earned
- 392US6670806B2✦ AIMagnetic position sensor for measuring linear displacement1,209 cites · 200295% earned
- 488US6050172APneumatically operated mechanism1,111 cites · 200095% earned
- 583US4896584APiston-cylinder assembly1,092 cites · 199095% earned
- 679US9488197B2Hydraulic circuit for automatic transmission1,003 cites · 201595% earned
- 775US9239064B2Fail-safe actuation system933 cites · 201493% earned
- 871US6130098AMoving microdroplets777 cites · 200095% earned
- 967US5396266AKinesthetic feedback apparatus and method661 cites · 199595% earned
- 1063US6057149AMicroscale devices and reactions in microscale devices455 cites · 200090% earned
- 1158US6346614B1Hybrid oligonucleotide phosphorothioates381 cites · 200290% earned
- 1254US5339723APressurized fluid actuation system for amplifying operator input force in a surgical instr374 cites · 199494% earned
- 1350US4800721AForce feedback lever321 cites · 198994% earned
- 1446US6683167B2Hybrid oligonucleotide phosphorothioates311 cites · 200289% earned
- 1542US6048734AThermal microvalves in a fluid flow method306 cites · 200088% earned
- 1638US6215221B1Electrostatic/pneumatic actuators for active surfaces300 cites · 200191% earned
- 1733US5317952ATentacle-like manipulators with adjustable tension lines293 cites · 199494% earned
- 1829US5205200AHydraulic booster device for linear actuator285 cites · 199394% earned
- 1925US5176358AMicrostructure gas valve control268 cites · 199391% earned
- 2021US7988215B2Surgical robotic system268 cites · 200894% earned
- 2117US5441597AMicrostructure gas valve control forming method262 cites · 199594% earned
- 2213US10478544B2Medicament preparation and treatment devices, methods, and systems255 cites · 201787% earned
- 238US5323999AMicrostructure gas valve control255 cites · 199491% earned
- 244US4434704AHydraulic digital stepper actuator252 cites · 198494% earned
- 251US6502837B1Enhanced computer optimized adaptive suspension system and method245 cites · 200387% earned
Rising· last 2 yrs
Assignees whose newest F15B patents became public in the last 2 years — the current frontier
- 199CATERPILLAR INC435 patents · 9,234 citations
- 296KOMATSU MFG CO LTD250 patents · 3,579 citations
- 392BOEING CO130 patents · 1,401 citations
- 488CLARK EQUIPMENT CO54 patents · 932 citations
- 583DEERE & CO282 patents · 2,386 citations
- 679SMC CORP283 patents · 3,156 citations
- 775PARKER HANNIFIN CORP138 patents · 1,095 citations
- 871SWAGELOK CO19 patents · 333 citations
- 967BRIDGESTONE CORP18 patents · 470 citations
- 1063HYDAC TECHNOLOGY GMBH73 patents · 631 citations
- 1158CKD CORP24 patents · 404 citations
- 1254SCHLUMBERGER TECHNOLOGY CORP29 patents · 300 citations
- 1350BOSCH GMBH ROBERT302 patents · 1,838 citations
- 1446GEN ELECTRIC34 patents · 480 citations
- 1542HONDA MOTOR CO LTD56 patents · 448 citations
- 1638GRACO MINNESOTA INC21 patents · 128 citations
- 1733DANFOSS AS59 patents · 731 citations
- 1829CONTINENTAL TEVES AG & CO OHG25 patents · 373 citations
- 1925KERR MACHINE CO15 patents · 154 citations
- 2021TOYOTA MOTOR CO LTD31 patents · 284 citations
- 2117ILLINOIS TOOL WORKS19 patents · 204 citations
- 2213PHD INC13 patents · 187 citations
- 238NABTESCO CORP34 patents · 201 citations
- 244CASCADE CORP16 patents · 136 citations
- 251KUBOTA KK129 patents · 333 citations
Active· last 5 yrs
Sustained F15B output across the last 5 years
- 199CATERPILLAR INC435 patents · 9,234 citations
- 296HONEYWELL INT INC36 patents · 985 citations
- 392HUSCO INT INC77 patents · 2,634 citations
- 488KOMATSU MFG CO LTD250 patents · 3,579 citations
- 583BOEING CO130 patents · 1,401 citations
- 679CLARK EQUIPMENT CO54 patents · 932 citations
- 775DEERE & CO282 patents · 2,386 citations
- 871SMC CORP283 patents · 3,156 citations
- 967NHK SPRING CO LTD17 patents · 449 citations
- 1063KOBE STEEL LTD52 patents · 1,002 citations
- 1158PARKER HANNIFIN CORP138 patents · 1,095 citations
- 1254SWAGELOK CO19 patents · 333 citations
- 1350DENSO CORP26 patents · 415 citations
- 1446BRIDGESTONE CORP18 patents · 470 citations
- 1542HYDAC TECHNOLOGY GMBH73 patents · 631 citations
- 1638MAC VALVES INC35 patents · 751 citations
- 1733CKD CORP24 patents · 404 citations
- 1829SCHLUMBERGER TECHNOLOGY CORP29 patents · 300 citations
- 1925DHK STORAGE LLC12 patents · 118 citations
- 2021MOOG INC32 patents · 498 citations
- 2117BOSCH GMBH ROBERT302 patents · 1,838 citations
- 2213HILL ROM SERVICES INC6 patents · 353 citations
- 238ROSEMOUNT INC9 patents · 290 citations
- 244GEN ELECTRIC34 patents · 480 citations
- 251FUJIKIN KK28 patents · 405 citations
All-time canon
All-time PatentIndex Score in F15B
- 199UNIV MICHIGAN9 patents · 1,901 citations
- 296FONG DANIELLE A25 patents · 755 citations
- 392CATERPILLAR INC435 patents · 9,234 citations
- 488HONEYWELL INC7 patents · 1,009 citations
- 583HONEYWELL INT INC36 patents · 985 citations
- 679SUSTAINX INC7 patents · 598 citations
- 775STANFORD RES INST INT8 patents · 456 citations
- 871HUSCO INT INC77 patents · 2,634 citations
- 967WELCH ALLYN INC10 patents · 757 citations
- 1063HALLIBURTON ENERGY SERV INC10 patents · 637 citations
- 1158KOMATSU MFG CO LTD250 patents · 3,579 citations
- 1254STOLL KURT50 patents · 1,914 citations
- 1350BOEING CO130 patents · 1,401 citations
- 1446CLARK EQUIPMENT CO54 patents · 932 citations
- 1542DEERE & CO282 patents · 2,386 citations
- 1638CASE CORP30 patents · 1,133 citations
- 1733HITACHI CONSTRUCTION MACHINERY143 patents · 3,459 citations
- 1829CATERPILLAR TRACTOR CO130 patents · 2,525 citations
- 1925SMC KK109 patents · 1,805 citations
- 2021STURMAN IND INC7 patents · 371 citations
- 2117DANA CORP19 patents · 635 citations
- 2213SMC CORP283 patents · 3,156 citations
- 238EATON CORP107 patents · 1,604 citations
- 244WELLDYNAMICS INC6 patents · 378 citations
- 251NHK SPRING CO LTD17 patents · 449 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth