Topic leaderboard
Rail vehicle suspensions & underframes
Ranked by the PatentIndex Score — a 1–99 percentile within B61F · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest B61F patents became public in the last 2 years — the current frontier
- 199William A. Kurtzhals16 patents · 173 citations
- 296Erik L. Gotlund22 patents · 91 citations
- 392Jon R. Jeambey13 patents · 51 citations
- 488Roshan N. Manibharathi15 patents · 51 citations
- 583F. Andrew Nibouar12 patents · 44 citations
- 679Jason C. Bryant12 patents · 44 citations
- 775James A. Pike12 patents · 44 citations
- 871Jonathan A. Stull12 patents · 44 citations
- 967Guy Blotnik6 patents · 5 citations
- 1063Shay Cohen6 patents · 5 citations
- 1158Antoine Moulin7 patents · 2 citations
- 1254Brian J. Dumont5 patents · 6 citations
- 1350Corey T. Pasta5 patents · 6 citations
- 1446Corey D. Wills5 patents · 6 citations
- 1542Dennis W. Morgart5 patents · 6 citations
- 1638James Paul5 patents · 6 citations
- 1733Matthew Fleming5 patents · 6 citations
- 1829Paul K. Gabler5 patents · 6 citations
- 1925Paul Harris5 patents · 6 citations
- 2021Nadav Laor3 patents · 4 citations
- 2117Eric L. Canfield2 patents · 11 citations
- 2213Stephen T. Buchanan2 patents · 11 citations
- 238Larry C. Valentine2 patents · 1 citations
- 244Mike E. Teaford2 patents · 1 citations
- 251Timothy A. Webb2 patents · 1 citations
Active· last 5 yrs
Sustained B61F output across the last 5 years
- 199Jamal Hematian21 patents · 447 citations
- 296John W. Rudibaugh8 patents · 421 citations
- 392Gregory J. Saxton11 patents · 177 citations
- 488William A. Kurtzhals16 patents · 173 citations
- 583Paul Steven Wike18 patents · 179 citations
- 679Aubra D. Mckisic8 patents · 180 citations
- 775Richard J. Schneider11 patents · 96 citations
- 871Erik L. Gotlund22 patents · 91 citations
- 967Ajith Kuttannair Kumar11 patents · 88 citations
- 1063Martin Teichmann19 patents · 105 citations
- 1158Jon R. Jeambey13 patents · 51 citations
- 1254Bret Dwayne Worden15 patents · 83 citations
- 1350Roshan N. Manibharathi15 patents · 51 citations
- 1446F. Andrew Nibouar12 patents · 44 citations
- 1542Jason C. Bryant12 patents · 44 citations
- 1638James A. Pike12 patents · 44 citations
- 1733Jonathan A. Stull12 patents · 44 citations
- 1829Ronald D. Golembiewski9 patents · 114 citations
- 1925Alain Rodet18 patents · 76 citations
- 2021Manuel Tavares8 patents · 61 citations
- 2117Guido Bieker11 patents · 52 citations
- 2213Kousuke Katahira28 patents · 74 citations
- 238Hiroyuki Kono15 patents · 46 citations
- 244Yasufumi Okumura13 patents · 35 citations
- 251Jingjun Zhang8 patents · 24 citations
All-time canon
Career PatentIndex Score in B61F
- 199James W. Forbes58 patents · 1,517 citations
- 296Jamal Hematian21 patents · 447 citations
- 392Charles Moehling15 patents · 623 citations
- 488Charles L. Van Auken9 patents · 553 citations
- 583Anthony J. Bauer8 patents · 248 citations
- 679Thomas R. Callahan8 patents · 248 citations
- 775Ronald R. Evers7 patents · 243 citations
- 871Edward R. Hanson6 patents · 242 citations
- 967John W. Coulborn10 patents · 444 citations
- 1063Robert L. Bullock16 patents · 993 citations
- 1158Donald J. Lane5 patents · 250 citations
- 1254Donald Wiebe19 patents · 809 citations
- 1350Brian A. Toussaint9 patents · 297 citations
- 1446Harry W. Mulcahy14 patents · 735 citations
- 1542Hans B. Weber15 patents · 781 citations
- 1638Armand P. Taillon8 patents · 529 citations
- 1733V. Terrey Hawthorne15 patents · 790 citations
- 1829John W. Rudibaugh8 patents · 421 citations
- 1925Herbert Scheffel10 patents · 495 citations
- 2021Charles P. Spencer12 patents · 653 citations
- 2117Otto W. Neumann5 patents · 317 citations
- 2213Franklin S. Mckeown, Jr.7 patents · 382 citations
- 238Terry L. Pitchford8 patents · 422 citations
- 244Harold A. List12 patents · 429 citations
- 251Robert D. Wronkiewicz9 patents · 372 citations
Rising· last 2 yrs
The top-scoring B61F patents made public in the last 2 years
- 199US12291247B2✦ AIRailcar truck roller bearing adapter-pad systems2 cites · 202476% earned
- 294US12145639B2✦ AIMethod for determining anomalies associated with a railcar wheelset, or a railcar bogie as1 cites · 202450% earned
- 388US12296993B2✦ AIDrone with railway driving capabilities1 cites · 202467% earned
- 481US12252338B2Method for turning a rails-mounted lift-robot0 cites · 20240% earned
- 575US12455294B2Pressure sensing probe0 cites · 20240% earned
- 669US12134413B2Derailment mitigation device for railroads and rail tracks0 cites · 20240% earned
- 763US12485508B2Devices and tooling system for maintenance of dynamic weight management systems on railroa0 cites · 20240% earned
- 856US12539896B2Bogie frame for rail vehicles made from an aluminum casting0 cites · 20240% earned
- 950US12253156B2Track system with a support member0 cites · 20240% earned
- 1044US12163863B2Detection system for suspension system of maglev train0 cites · 20240% earned
- 1138US12466450B2Systems and methods for inspection of a track of an amusement attraction0 cites · 20240% earned
- 1231US12545506B2System for zero radius direction change in an independent cart system0 cites · 20250% earned
- 1325US12570334B2Multi-unit railroad car and railroad car trucks therefor0 cites · 20240% earned
- 1419US12454251B2End cover assembly, air cylinder, tread cleaner and railway vehicle0 cites · 20240% earned
- 1513US12571165B2Systems and methods for performing maintenance of an amusement park attraction system0 cites · 20240% earned
- 166US12583256B2Portal axle for a rail vehicle and method for manufacturing a portal axle of this type0 cites · 20250% earned
- 171US12139184B2Autonomous positioning method for underground coal mine anti-explosion storage battery rai0 cites · 20240% earned
Active· last 5 yrs
The top-scoring B61F patents of the last 5 years
- 199US11524709B2✦ AIElectric rail vehicle10 cites · 202273% earned
- 296US11731673B1✦ AIWheel-mounted sensor ring apparatus for determining anomalies associated with a railcar wh10 cites · 202378% earned
- 392US11364940B1✦ AIAdaptive route rail system with passive switches7 cites · 202286% earned
- 488US11761851B1Backlash measurement system for an electromechanical actuator5 cites · 202384% earned
- 583US11325624B2Electric rail vehicle6 cites · 202171% earned
- 679US12116206B2Robotic service device and handling method4 cites · 202175% earned
- 775US12291247B2Railcar truck roller bearing adapter-pad systems2 cites · 202476% earned
- 871US11801875B2Hybrid cable/rail transportation system, transportation unit for such a transportation sys4 cites · 202182% earned
- 967US11945648B2Method for turning a robot in an array of vertical and horizontal rack-based tracks2 cites · 202251% earned
- 1063US11945476B2Railcar cold formed center sill with stiffness enhancing structure2 cites · 202267% earned
- 1158US12246762B2System and method for rail scanning using electromagnetic engines2 cites · 202261% earned
- 1254US11613281B2Railway truck assembly having compressible side bearings2 cites · 202276% earned
- 1350US11208124B2Follow-up mechanism and brake caliper unit for gauge-changeable bogie2 cites · 202176% earned
- 1446US12195056B2Underframe boundary beam connecting structure suitable for railway vehicle with drum-shape2 cites · 202276% earned
- 1542US11173928B2Rail vehicle having an improved cooling system and method for its internal combustion engi2 cites · 202176% earned
- 1638US11414107B2Railroad car truck damper wedge fittings2 cites · 202167% earned
- 1733US11459002B2Methods and systems for dynamic weight management2 cites · 202176% earned
- 1829US11731669B2Railcar driving bogie2 cites · 202176% earned
- 1925US11479274B2Method for improving fatigue resistance performance of locomotive rubber-metal pad and loc2 cites · 202176% earned
- 2021US11772689B1Locked-axle spring compression system and method1 cites · 202350% earned
- 2117US12448014B2Railroad car truck side frame1 cites · 202356% earned
- 2213US11505222B2Rail transportation system1 cites · 202256% earned
- 238US11975613B2Variable-gauge train control apparatus and variable-gauge train propulsion control system2 cites · 202176% earned
- 244US11230302B2Railway car truck system2 cites · 202167% earned
- 251US11835119B2Track system with a support member1 cites · 202142% earned
All-time canon
The defining B61F patents of the whole record
- 199US5825284A✦ AISystem and method for the detection of vehicle rollover conditions357 cites · 199894% earned
- 296US6161962A✦ AIBearing with sensor module187 cites · 200094% earned
- 392US4915031A✦ AIRailway truck damping assembly130 cites · 199093% earned
- 488US5237933AService-life, low-profile, retrofittable, elastomeric mounting for three-piece, railroad-c126 cites · 199393% earned
- 583US5404826ABearing adapter for railway trucks having downward depending ends on adapter plate for pro122 cites · 199593% earned
- 679US4947760AArticulated flat car122 cites · 199093% earned
- 775US6338300B1Bogie with composite side members117 cites · 200293% earned
- 871US4478155ARailway container and car117 cites · 198493% earned
- 967US5765485AInsulated composite railway boxcar and method115 cites · 199887% earned
- 1063US5562045ABearing adapter and adapter pad for railway trucks111 cites · 199693% earned
- 1158US5074624ABogie vehicle with electrohydraulic brakes and hydropneumatic suspension108 cites · 199193% earned
- 1254US6178894B1Lateral control mount105 cites · 200189% earned
- 1350US6142081APedestal rocker seat for providing passive axle steering to a rigid railway truck103 cites · 200093% earned
- 1446US4686907ALow level freight car100 cites · 198793% earned
- 1542US4067261ADamping railway vehicle suspension96 cites · 197893% earned
- 1638US5799582ABearing adapter and adapter pad for railway trucks96 cites · 199893% earned
- 1733US5511886ABearing seal with oil deflectors96 cites · 199693% earned
- 1829US4917019ARailway freight car95 cites · 199093% earned
- 1925US4751882AArticulated lightweight piggyback railcar95 cites · 198893% earned
- 2021US5890435AInsulated composite railway boxcar and method91 cites · 199987% earned
- 2117US4111131AResilient railroad car truck91 cites · 197893% earned
- 2213US6672224B2Railway car truck with a rocker seat91 cites · 200293% earned
- 238US5481986ALightweight truck sideframe90 cites · 199693% earned
- 244US5509358ARailcar truck bearing adapter construction90 cites · 199693% earned
- 251US5081935ARailroad car vertical isolator pad90 cites · 199293% earned
Rising· last 2 yrs
Assignees whose newest B61F patents became public in the last 2 years — the current frontier
- 199NAT STEEL CAR LTD60 patents · 1,512 citations
- 293NEVIS IND LLC20 patents · 63 citations
- 386CRRC QINGDAO SIFANG CO LTD33 patents · 15 citations
- 479COMMONSENSE ROBOTICS LTD4 patents · 5 citations
- 571BNSF RAILWAY CO8 patents · 7 citations
- 664LEAR CORP7 patents · 2 citations
- 757BALANCED ENG SOLUTION LLC2 patents · 11 citations
- 850UNIVERSAL CITY STUDIOS LLC4 patents · 7 citations
- 943THONI LOTHAR3 patents · 5 citations
- 1036PB INNOVATIONS LLC2 patents · 0 citations
- 1129RAILWAY ROBOTICS AS1 patents · 1 citations
- 1221BOCHUMER VEREIN VERKEHRSTECHNIK GMBH1 patents · 0 citations
- 1314CRRC CHANGZHOU TECH MARK IND CO LTD1 patents · 0 citations
- 147ROCKWELL AUTOMATION TECH INC1 patents · 0 citations
- 151Shanghai shenchuan electric co ltd1 patents · 0 citations
Active· last 5 yrs
Sustained B61F output across the last 5 years
- 199NAT STEEL CAR LTD60 patents · 1,512 citations
- 296STANDARD CAR TRUCK CO40 patents · 1,624 citations
- 392PENNSY CORP9 patents · 419 citations
- 488AMSTED RAIL CO INC39 patents · 304 citations
- 583HITACHI LTD21 patents · 283 citations
- 679NEVIS IND LLC20 patents · 63 citations
- 775BOMBARDIER TRANSP GMBH41 patents · 96 citations
- 871KNORR BREMSE SYSTEME9 patents · 53 citations
- 967KASGRO RAIL CORP6 patents · 49 citations
- 1063MITSUBISHI HEAVY IND LTD17 patents · 28 citations
- 1158SKF AB21 patents · 25 citations
- 1254PARALLEL SYSTEMS INC7 patents · 17 citations
- 1350BYD CO LTD18 patents · 21 citations
- 1446ALSTOM HOLDINGS5 patents · 19 citations
- 1542CRRC QINGDAO SIFANG CO LTD33 patents · 15 citations
- 1638LEITNER SPA4 patents · 15 citations
- 1733Siemens Mobility GmbH23 patents · 15 citations
- 1829ALSTOM TRANSP TECH26 patents · 12 citations
- 1925COMMONSENSE ROBOTICS LTD4 patents · 5 citations
- 2021JAC OPERATIONS INC7 patents · 9 citations
- 2117BNSF RAILWAY CO8 patents · 7 citations
- 2213LEAR CORP7 patents · 2 citations
- 238OCADO INNOVATION LTD2 patents · 24 citations
- 244ZHUZHOU TIMES NEW MAT TECH CO5 patents · 11 citations
- 251TRANSP IP HOLDINGS LLC8 patents · 6 citations
All-time canon
All-time PatentIndex Score in B61F
- 199NAT STEEL CAR LTD60 patents · 1,512 citations
- 296AMSTED IND INC91 patents · 4,132 citations
- 392STANDARD CAR TRUCK CO40 patents · 1,624 citations
- 488GEC ALSTHOM TRANSPORT SA15 patents · 484 citations
- 583TRINITY IND INC15 patents · 584 citations
- 679TIMKEN CO9 patents · 543 citations
- 775PENNSY CORP9 patents · 419 citations
- 871SOUTH AFRICAN INVENTIONS7 patents · 427 citations
- 967LORD CORP7 patents · 386 citations
- 1063STUCKI CO A15 patents · 540 citations
- 1158MINER ENTERPRISES20 patents · 530 citations
- 1254NAT CASTINGS INC11 patents · 475 citations
- 1350TRN BUSINESS TRUST8 patents · 313 citations
- 1446HANSEN INC8 patents · 353 citations
- 1542ASF KEYSTONE INC14 patents · 429 citations
- 1638DRESSER IND11 patents · 324 citations
- 1733GUNDERSON INC17 patents · 521 citations
- 1829RAILWAY ENG ASS10 patents · 339 citations
- 1925THRALL CAR MFG CO13 patents · 408 citations
- 2021DAYCO CORP21 patents · 422 citations
- 2117GEN MOTORS CORP10 patents · 352 citations
- 2213ACF IND INC23 patents · 475 citations
- 238FORBES JAMES W9 patents · 166 citations
- 244TRANSDYNE INC6 patents · 242 citations
- 251BUCKEYE STEEL CASTINGS CO13 patents · 310 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth