Topic leaderboard
Ignition for internal-combustion engines
Ranked by the PatentIndex Score — a 1–99 percentile within F02P · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest F02P patents became public in the last 2 years — the current frontier
- 199Axel O. Zur Loye7 patents · 1,050 citations
- 296Luigi P. Tozzi27 patents · 634 citations
- 392Thomas G. Leone42 patents · 517 citations
- 488Michael Damian Czekala40 patents · 426 citations
- 583William P Attard11 patents · 129 citations
- 679Steven Wooldridge15 patents · 59 citations
- 775Maria-Emmanuella Sotiropoulou11 patents · 54 citations
- 871David C. Petruska8 patents · 49 citations
- 967David Bruce Reiche7 patents · 36 citations
- 1063Shannon R. Davis7 patents · 17 citations
- 1158Andrew Guy Kitchen9 patents · 28 citations
- 1254Bruno Schuehmacher7 patents · 19 citations
- 1350David Monfette6 patents · 19 citations
- 1446Michel Bernier6 patents · 19 citations
- 1542Ming Zheng7 patents · 19 citations
- 1638Soo Hyung Woo13 patents · 18 citations
- 1733Xiaogang Zhang8 patents · 18 citations
- 1829Steven J. Gonring5 patents · 16 citations
- 1925Kunihiko Suzuki9 patents · 16 citations
- 2021Vijay Ramappan5 patents · 21 citations
- 2117Adam Krach5 patents · 19 citations
- 2213Johann Klausner4 patents · 26 citations
- 238Yu Matsui5 patents · 6 citations
- 244James Jay Cress5 patents · 17 citations
- 251Bert Gustafsson8 patents · 13 citations
Active· last 5 yrs
Sustained F02P output across the last 5 years
- 199Adya S. Tripathi25 patents · 1,859 citations
- 296Daniel R. Cohn42 patents · 699 citations
- 392Leslie Bromberg42 patents · 699 citations
- 488Axel O. Zur Loye7 patents · 1,050 citations
- 583Gopichandra Surnilla94 patents · 1,582 citations
- 679Louis J. Serrano30 patents · 581 citations
- 775Mohammad R. Pirjaberi11 patents · 367 citations
- 871Jeffrey Allen Doering47 patents · 423 citations
- 967Adam Nathan Banker24 patents · 320 citations
- 1063Szymon Suckewer8 patents · 323 citations
- 1158Luigi P. Tozzi27 patents · 634 citations
- 1254Guoming G. Zhu30 patents · 824 citations
- 1350Thomas G. Leone42 patents · 517 citations
- 1446Artur P. Suckewer9 patents · 271 citations
- 1542Chao F. Daniels16 patents · 504 citations
- 1638Gregory James Hampson22 patents · 397 citations
- 1733Domenico Chiera20 patents · 392 citations
- 1829Matthew A. Younkins20 patents · 259 citations
- 1925Michael Damian Czekala40 patents · 426 citations
- 2021Michael Howard Shelby22 patents · 220 citations
- 2117Chris Paul Glugla108 patents · 715 citations
- 2213Hiroyuki Yamashita9 patents · 283 citations
- 238Peter Hohner16 patents · 294 citations
- 244Noriyuki Ota7 patents · 163 citations
- 251Tetsuya Miwa24 patents · 207 citations
All-time canon
Career PatentIndex Score in F02P
- 199Adya S. Tripathi25 patents · 1,859 citations
- 296Chester J. Silvestri15 patents · 1,434 citations
- 392Michael A. V. Ward25 patents · 2,087 citations
- 488Daniel R. Cohn42 patents · 699 citations
- 583Leslie Bromberg42 patents · 699 citations
- 679John B. Heywood24 patents · 562 citations
- 775Axel O. Zur Loye7 patents · 1,050 citations
- 871Gary L. Hunter6 patents · 1,051 citations
- 967Gopichandra Surnilla94 patents · 1,582 citations
- 1063Louis J. Serrano30 patents · 581 citations
- 1158Kazuhide Togai6 patents · 654 citations
- 1254George Muntean4 patents · 1,044 citations
- 1350Greg Moore4 patents · 1,044 citations
- 1446John F. Wright4 patents · 1,044 citations
- 1542Julie A. Wagner4 patents · 1,044 citations
- 1638Patrick F. Flynn4 patents · 1,044 citations
- 1733Russ P. Durrett4 patents · 1,044 citations
- 1829Koji Morikawa8 patents · 503 citations
- 1925Michael John Cullen20 patents · 769 citations
- 2021Mohammad R. Pirjaberi11 patents · 367 citations
- 2117Toshiharu Nogi8 patents · 457 citations
- 2213Jeffrey Allen Doering47 patents · 423 citations
- 238Alex O'Connor Gibson31 patents · 379 citations
- 244Adam Nathan Banker24 patents · 320 citations
- 251Dennis Craig Reed21 patents · 307 citations
Rising· last 2 yrs
The top-scoring F02P patents made public in the last 2 years
- 199US12378937B1✦ AIPre-ignition prevention using ion sense detection of exhaust stroke heat release for dual 3 cites · 202580% earned
- 296US12092063B2✦ AIPredictive model-based spark control3 cites · 202472% earned
- 392US11879420B1✦ AISystem and method for controlling ignition coil3 cites · 202480% earned
- 488US12037956B1Engine control systems and methods for starting an engine2 cites · 202467% earned
- 583US12085034B2Vehicle control device2 cites · 202476% earned
- 679US12286952B1High-energy remote chamber ignition system1 cites · 202567% earned
- 775US12196123B1Press fit turbulent jet ignition insert1 cites · 202567% earned
- 871US11959435B1Turbulent jet controlled compression ignition (TJCCI) engine1 cites · 202467% earned
- 967US12065224B1Lanyard system and method for a marine vessel0 cites · 20240% earned
- 1063US12276217B2Engine device0 cites · 20240% earned
- 1158US11952936B1Systems and methods for combusting unconventional fuel chemistries in a diesel engine arch0 cites · 20240% earned
- 1254US12241428B2Method and system for starting an internal combustion engine0 cites · 20240% earned
- 1350US12480455B2Engine control system and methods0 cites · 20240% earned
- 1446US12025063B2Natural gas engines with fuel quality determination0 cites · 20240% earned
- 1542US12366222B2Engine control system and methods0 cites · 20240% earned
- 1638US12234774B2Plasma ignition and combustion assist system for gas turbine engines0 cites · 20240% earned
- 1733US11942764B1Spark plug for boosted engine0 cites · 20240% earned
- 1829US12409729B1Vehicle control system0 cites · 20250% earned
- 1925US12410760B2Control system for an internal combustion engine, internal combustion engine system, and m0 cites · 20250% earned
- 2021US12253046B2Internal combustion engine for gaseous fuel0 cites · 20240% earned
- 2117US12435677B2Two-stroke engine assembly having a catalytic converter and method for controlling same0 cites · 20250% earned
- 2213US12027825B1Spark plug and method for producing a spark plug0 cites · 20240% earned
- 238US12163496B2Optical sensitizer device and method for low-energy laser ignition of propellants0 cites · 20240% earned
- 244US12018624B1Camless engines0 cites · 20240% earned
- 251US12188426B2Control device for internal combustion engine0 cites · 20240% earned
Active· last 5 yrs
The top-scoring F02P patents of the last 5 years
- 199US11156198B1✦ AISystems and methods for ignition coil multiplexing in a pre-chamber system18 cites · 202189% earned
- 296US11598276B1✦ AIMethods and systems for multi-fuel engine13 cites · 202388% earned
- 392US10947948B1✦ AISystems and methods for ignition coil multiplexing in a pre-chamber system15 cites · 202183% earned
- 488US11085402B1Methods and systems for operating an adjustable pre-chamber15 cites · 202189% earned
- 583US11078826B1Gaseous fuel engine and sparkless operating strategy therefor11 cites · 202188% earned
- 679US11092130B2Ignition timing control device for internal combustion engine11 cites · 202188% earned
- 775US11035334B1Engine ignition system and method using sparkplug dry firing to extend service life10 cites · 202187% earned
- 871US11248551B1Methods and systems for pre-chamber operation during catalyst heating8 cites · 202286% earned
- 967US12378937B1Pre-ignition prevention using ion sense detection of exhaust stroke heat release for dual 3 cites · 202580% earned
- 1063US11125202B1Feedforward artificial neural network for off-nominal spark control9 cites · 202187% earned
- 1158US11066980B1Methods and systems for a variable volume pre-chamber igniter8 cites · 202186% earned
- 1254US10989129B1Systems and methods for adjusting fueling in a cylinder with a pre-chamber9 cites · 202181% earned
- 1350US11306672B2Use of different pneumatic cylinder spring types in a variable displacement engine for eng6 cites · 202178% earned
- 1446US11105277B1Method and system for variable displacement engine with AC power generation6 cites · 202185% earned
- 1542US11268467B2Controller and control method for internal combustion engine6 cites · 202185% earned
- 1638US11255240B1Systems and methods for a combined pre-chamber and thermactor air system6 cites · 202285% earned
- 1733US11143575B2Diagnostic system and method for detecting internal combustion engine faults using exhaust7 cites · 202175% earned
- 1829US11156149B1Systems and methods for a variable volume pre-chamber igniter7 cites · 202186% earned
- 1925US11125171B1Port injection system for reduction of particulates from turbocharged direct injection gas5 cites · 202160% earned
- 2021US12092063B2Predictive model-based spark control3 cites · 202472% earned
- 2117US11251588B1Dual spark plug5 cites · 202284% earned
- 2213US11695256B2Spark plug for internal combustion engine4 cites · 202382% earned
- 238US11674464B2Methods and systems for engine cold-start5 cites · 202384% earned
- 244US11598245B2Engine system4 cites · 202382% earned
- 251US11431155B2Spark plug6 cites · 202185% earned
All-time canon
The defining F02P patents of the whole record
- 199US6498480B1✦ AIMagnetic non-contacting rotary transducer1,183 cites · 200295% earned
- 296US4282573A✦ AIProcessor interrupt device for an electronic engine control apparatus716 cites · 198195% earned
- 392US6276334B1✦ AIPremixed charge compression ignition engine with optimal combustion control385 cites · 200195% earned
- 488US4522162APortable gas-powered tool with linear motor320 cites · 198589% earned
- 583US6230683B1Premixed charge compression ignition engine with optimal combustion control300 cites · 200185% earned
- 679US4483473APortable gas-powered fastener driving tool281 cites · 198494% earned
- 775US5657625AApparatus and method for internal combustion engine control272 cites · 199794% earned
- 871US7577511B1Internal combustion engine control for improved fuel efficiency262 cites · 200994% earned
- 967US8099224B2Internal combustion engine control for improved fuel efficiency260 cites · 201187% earned
- 1063US6009369AVoltage monitoring glow plug controller259 cites · 199994% earned
- 1158US6286482B1Premixed charge compression ignition engine with optimal combustion control257 cites · 200194% earned
- 1254US5558071AIgnition system power converter and controller247 cites · 199694% earned
- 1350US4509488AProcess and apparatus for intermittent control of a cyclically operating internal combusti241 cites · 198594% earned
- 1446US4774914AElectromagnetic ignition--an ignition system producing a large size and intense capacitive241 cites · 198894% earned
- 1542US4899256APower module229 cites · 199094% earned
- 1638US4841925AEnhanced flame ignition for hydrocarbon fuels227 cites · 198994% earned
- 1733US6594990B2Method for regenerating a diesel particulate filter219 cites · 200294% earned
- 1829US4347827ANoise blanker circuit for use with electronic ignition systems or the like214 cites · 198294% earned
- 1925US4549254ABuck-boost regulated D.C. to D.C. power supply213 cites · 198594% earned
- 2021US4913116AIgnition timing control apparatus for an internal combustion engine211 cites · 199091% earned
- 2117US5274336ACapacitively-coupled test probe210 cites · 199394% earned
- 2213US6990956B2Internal combustion engine205 cites · 200594% earned
- 238US6980903B2Exhaust gas control using a spark plug ionization signal203 cites · 200494% earned
- 244US4255789AMicroprocessor-based electronic engine control system198 cites · 198194% earned
- 251US5595060AApparatus and method for internal-combustion engine control194 cites · 199794% earned
Rising· last 2 yrs
Assignees whose newest F02P patents became public in the last 2 years — the current frontier
- 199FORD GLOBAL TECH LLC526 patents · 4,919 citations
- 296TOYOTA MOTOR CO LTD487 patents · 4,706 citations
- 392BOSCH GMBH ROBERT570 patents · 8,031 citations
- 488MITSUBISHI MOTORS CORP40 patents · 1,417 citations
- 583NISSAN MOTOR326 patents · 6,075 citations
- 679CATERPILLAR INC65 patents · 1,024 citations
- 775BRUNSWICK CORP55 patents · 1,090 citations
- 871HONDA MOTOR CO LTD306 patents · 3,637 citations
- 967YAMAHA MOTOR CO LTD51 patents · 587 citations
- 1063WOODWARD INC22 patents · 321 citations
- 1158GEN ELECTRIC22 patents · 193 citations
- 1254HYUNDAI MOTOR CO LTD82 patents · 193 citations
- 1350VOLKSWAGEN AG17 patents · 102 citations
- 1446ISUZU MOTORS LTD11 patents · 98 citations
- 1542BAYERISCHE MOTOREN WERKE AG28 patents · 138 citations
- 1638GM GLOBAL TECH OPERATIONS LLC65 patents · 159 citations
- 1733ARCTIC CAT INC8 patents · 45 citations
- 1829SEM AB21 patents · 67 citations
- 1925Davis Intellectual Properties LLC7 patents · 17 citations
- 2021BOMBARDIER RECREATIONAL PRODUCTS INC11 patents · 26 citations
- 2117PURDUE RESEARCH FOUNDATION4 patents · 208 citations
- 2213SEMICONDUCTOR COMPONENTS IND LLC15 patents · 37 citations
- 238PROMETHEUS APPLIED TECH LLC9 patents · 28 citations
- 244ZHENG MING6 patents · 17 citations
- 251CATERPILLAR ENERGY SOLUTIONS GMBH10 patents · 16 citations
Active· last 5 yrs
Sustained F02P output across the last 5 years
- 199TULA TECHNOLOGY INC60 patents · 1,501 citations
- 296FORD GLOBAL TECH LLC526 patents · 4,919 citations
- 392TOYOTA MOTOR CO LTD487 patents · 4,706 citations
- 488BOSCH GMBH ROBERT570 patents · 8,031 citations
- 583MITSUBISHI MOTORS CORP40 patents · 1,417 citations
- 679NISSAN MOTOR326 patents · 6,075 citations
- 775DENSO CORP288 patents · 2,087 citations
- 871CATERPILLAR INC65 patents · 1,024 citations
- 967MAZDA MOTOR178 patents · 1,540 citations
- 1063MITSUBISHI ELECTRIC CORP533 patents · 6,266 citations
- 1158UNIV CALIFORNIA10 patents · 383 citations
- 1254BRUNSWICK CORP55 patents · 1,090 citations
- 1350HONDA MOTOR CO LTD306 patents · 3,637 citations
- 1446KNITE INC8 patents · 253 citations
- 1542YAMAHA MOTOR CO LTD51 patents · 587 citations
- 1638NGK SPARK PLUG CO115 patents · 1,055 citations
- 1733WOODWARD INC22 patents · 321 citations
- 1829CUMMINS INC48 patents · 282 citations
- 1925SOUTHWEST RES INST21 patents · 257 citations
- 2021ETHANOL BOOSTING SYSTEMS LLC17 patents · 123 citations
- 2117GEN ELECTRIC22 patents · 193 citations
- 2213PRATT & WHITNEY CANADA17 patents · 184 citations
- 238HYUNDAI MOTOR CO LTD82 patents · 193 citations
- 244STIHL AG & CO KG ANDREAS30 patents · 228 citations
- 251UNIV WEST VIRGINIA9 patents · 151 citations
All-time canon
All-time PatentIndex Score in F02P
- 199TULA TECHNOLOGY INC60 patents · 1,501 citations
- 296HITACHI LTD237 patents · 4,897 citations
- 392FORD GLOBAL TECH LLC526 patents · 4,919 citations
- 488CUMBUSTION ELECTROMAGNETICS12 patents · 1,481 citations
- 583CUMMINS ENGINE CO INC14 patents · 1,326 citations
- 679MASSACHUSETTS INST TECHNOLOGY21 patents · 563 citations
- 775TRIPATHI ADYA S7 patents · 743 citations
- 871FORD MOTOR CO123 patents · 3,845 citations
- 967TOYOTA MOTOR CO LTD487 patents · 4,706 citations
- 1063BOSCH GMBH ROBERT570 patents · 8,031 citations
- 1158MITSUBISHI MOTORS CORP40 patents · 1,417 citations
- 1254FUJI HEAVY IND LTD76 patents · 1,667 citations
- 1350GEN MOTORS CORP176 patents · 4,293 citations
- 1446NIPPON DENSO CO208 patents · 4,047 citations
- 1542NIPPON SOKEN83 patents · 1,940 citations
- 1638NISSAN MOTOR326 patents · 6,075 citations
- 1733DENSO CORP288 patents · 2,087 citations
- 1829FORD GLOBAL TECH INC27 patents · 932 citations
- 1925CATERPILLAR INC65 patents · 1,024 citations
- 2021MAZDA MOTOR178 patents · 1,540 citations
- 2117VISTEON GLOBAL TECH INC39 patents · 1,217 citations
- 2213CHRYSLER CORP61 patents · 1,324 citations
- 238DELPHI TECH INC75 patents · 1,273 citations
- 244COHN DANIEL R5 patents · 109 citations
- 251MITSUBISHI ELECTRIC CORP533 patents · 6,266 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth