Topic leaderboard
Blasting
Ranked by the PatentIndex Score — a 1–99 percentile within F42D · public-visibility date · generated 2026
top 25 per window · public-visibility date
Rising· last 2 yrs
Inventors whose newest F42D patents became public in the last 2 years — the current frontier
- 199Thilo Scharf20 patents · 372 citations
- 296David C. Parks12 patents · 311 citations
- 392Wenbo Yang12 patents · 573 citations
- 488Christian Eitschberger32 patents · 546 citations
- 583James A. Rollins11 patents · 242 citations
- 679Gimtong Teowee22 patents · 246 citations
- 775Benjamin Vascal Knight10 patents · 153 citations
- 871Richard Wayne Bradley13 patents · 151 citations
- 967Raphael Trousselle5 patents · 290 citations
- 1063Cornelis L. Kome11 patents · 76 citations
- 1158John B. Halander16 patents · 98 citations
- 1254Shelby L. Sullivan12 patents · 139 citations
- 1350Casey L. Nelson14 patents · 70 citations
- 1446William Richard Collins9 patents · 140 citations
- 1542Charles Levine10 patents · 132 citations
- 1638James Edward Kash8 patents · 67 citations
- 1733Joe Noel Wells6 patents · 65 citations
- 1829Jon Bruner6 patents · 43 citations
- 1925Dawna Mauldin6 patents · 81 citations
- 2021Sidney W. Mauldin6 patents · 81 citations
- 2117Lee Foltz16 patents · 83 citations
- 2213Ronald M. Dufrane8 patents · 49 citations
- 238Elmar Lennox Muller22 patents · 58 citations
- 244James D. Lucas7 patents · 27 citations
- 251Larry S. Howe9 patents · 21 citations
Active· last 5 yrs
Sustained F42D output across the last 5 years
- 199Frank Haron Preiss19 patents · 395 citations
- 296Thilo Scharf20 patents · 372 citations
- 392Liam Mcnelis18 patents · 341 citations
- 488Eric Mulhern14 patents · 314 citations
- 583David C. Parks12 patents · 311 citations
- 679Wenbo Yang12 patents · 573 citations
- 775Christian Eitschberger32 patents · 546 citations
- 871John T. Hardesty23 patents · 455 citations
- 967James A. Rollins11 patents · 242 citations
- 1063Dirk Hummel11 patents · 341 citations
- 1158Gimtong Teowee22 patents · 246 citations
- 1254Stephen W. Bartholomew11 patents · 222 citations
- 1350Benjamin Vascal Knight10 patents · 153 citations
- 1446Kenneth R. Goodman7 patents · 254 citations
- 1542Andreas Robert Zemla13 patents · 144 citations
- 1638Richard Wayne Bradley13 patents · 151 citations
- 1733Raphael Trousselle5 patents · 290 citations
- 1829Cornelis L. Kome11 patents · 76 citations
- 1925John B. Halander16 patents · 98 citations
- 2021Shelby L. Sullivan12 patents · 139 citations
- 2117Casey L. Nelson14 patents · 70 citations
- 2213Andre Louis Koekemoer22 patents · 141 citations
- 238Dale Langford10 patents · 139 citations
- 244Andy Lane9 patents · 135 citations
- 251F. Richard Langner12 patents · 108 citations
All-time canon
Career PatentIndex Score in F42D
- 199Nolan C. Lerche23 patents · 1,717 citations
- 296James E. Brooks25 patents · 1,663 citations
- 392Frank Haron Preiss19 patents · 395 citations
- 488Thilo Scharf20 patents · 372 citations
- 583Liam Mcnelis18 patents · 341 citations
- 679Eric Mulhern14 patents · 314 citations
- 775David C. Parks12 patents · 311 citations
- 871Lawrence A. Behrmann16 patents · 741 citations
- 967Wenbo Yang12 patents · 573 citations
- 1063Christian Eitschberger32 patents · 546 citations
- 1158James V. Carisella5 patents · 601 citations
- 1254Robert Bradley Cook5 patents · 601 citations
- 1350Gene T. Boop5 patents · 480 citations
- 1446John T. Hardesty23 patents · 455 citations
- 1542Michael J. Mccann7 patents · 480 citations
- 1638Brenden M. Grove5 patents · 283 citations
- 1733Ronald F. Stewart9 patents · 443 citations
- 1829James A. Rollins11 patents · 242 citations
- 1925Ian C. Walton9 patents · 311 citations
- 2021Jonathan L. Mace13 patents · 216 citations
- 2117Gerald J. Seitz8 patents · 187 citations
- 2213John L. Donovan9 patents · 305 citations
- 238Daniel C. Markel5 patents · 266 citations
- 244James M. Barker11 patents · 354 citations
- 251Joseph L. La Mura9 patents · 166 citations
Rising· last 2 yrs
The top-scoring F42D patents made public in the last 2 years
- 199US12221864B1✦ AIDownhole perforating gun tube and components3 cites · 202561% earned
- 296US12018534B1✦ AIDrilling device for coal mining3 cites · 202480% earned
- 392US12291945B1✦ AIDownhole perforating gun system3 cites · 202580% earned
- 488US12123697B1Charging device and charging method for open pit mine rock perforation blasting2 cites · 202476% earned
- 583US12252965B2Reusable perforating gun system and method2 cites · 202453% earned
- 679US12203738B2Addressable ignition stage for enabling a detonator/ignitor2 cites · 202467% earned
- 775US12352551B2Detonating cord depth locating feature2 cites · 202476% earned
- 871US12286867B2Self-shunting detonator for well perforating gun2 cites · 202467% earned
- 967US12529550B2Integrated detonator sensors1 cites · 202456% earned
- 1063US12392211B2Explosive downhole tools having improved wellbore conveyance and debris properties, method1 cites · 202467% earned
- 1158US12209849B2Reusable tandem subs including a signal bar for a perforating gun system1 cites · 202456% earned
- 1254US12241341B2Detonation module1 cites · 202456% earned
- 1350US12287183B2Explosive booster1 cites · 202556% earned
- 1446US12287649B2Apparatus and method for operating electronic detonator blaster with integrated flight fun1 cites · 202567% earned
- 1542US11976914B1Efficient blasting method for similar cutting in rock tunnel1 cites · 202467% earned
- 1638US11982079B1Special purpose EOD axial repetitive joint2 cites · 202476% earned
- 1733US12163406B2Ballistically safe wellbore tool1 cites · 202456% earned
- 1829US12078466B2Avalanche triggering system1 cites · 202467% earned
- 1925US12510342B2Systems for delivering explosives and methods related thereto0 cites · 20250% earned
- 2021US12252453B2Coreless-coil shock tube system with reduced noise0 cites · 20240% earned
- 2117US12065913B1Directly initiated addressable power charge0 cites · 20240% earned
- 2213US11913762B1Multi-level networked ordnance system0 cites · 20240% earned
- 238US12076728B1Systems and/or methods for disposal of ammunition or other items0 cites · 20240% earned
- 244US12110770B2Single or multi-fire semi-automatic perforation system and methods of use0 cites · 20240% earned
- 251US12312924B2Shaped charge load tube with integrated detonation cord retention mechanism0 cites · 20240% earned
Active· last 5 yrs
The top-scoring F42D patents of the last 5 years
- 199US11091987B1✦ AIPerforation gun system34 cites · 202187% earned
- 296US11293737B2✦ AIDetonation system having sealed explosive initiation assembly18 cites · 202189% earned
- 392US11299967B2✦ AIBox by pin perforating gun system and methods16 cites · 202180% earned
- 488US11236591B2Reusable perforating gun system and method15 cites · 202174% earned
- 583US11480038B2Modular perforating gun system18 cites · 202189% earned
- 679US11953305B2Detonator installation including a controller13 cites · 202288% earned
- 775US11624266B2Downhole perforating gun tube and components10 cites · 202173% earned
- 871US11098563B1Perforating gun connection system12 cites · 202188% earned
- 967US11460281B2Detonation interrupt device12 cites · 202288% earned
- 1063US10921089B1Shaped charges for focusing a fluid mass11 cites · 202188% earned
- 1158US10982942B1Munitions and methods for operating same12 cites · 202179% earned
- 1254US11402190B2Detonation system having sealed explosive initiation assembly9 cites · 202187% earned
- 1350US10883327B1Power charge with exposed propellant12 cites · 202188% earned
- 1446US12018534B1Drilling device for coal mining3 cites · 202480% earned
- 1542US11125084B1Mining method7 cites · 202179% earned
- 1638US11906278B2Bridged bulkheads for perforating gun assembly7 cites · 202286% earned
- 1733US11243038B1Systems and methods for launching a projectile from a disrupter cannon6 cites · 202278% earned
- 1829US11913767B2End plate for a perforating gun assembly6 cites · 202285% earned
- 1925US11940261B2Bulkhead for a perforating gun assembly6 cites · 202285% earned
- 2021US11448044B2Universal plug and play perforating gun tandem7 cites · 202175% earned
- 2117US11795792B2Micro-controller-based switch assembly for wellbore systems and method4 cites · 202270% earned
- 2213US12291945B1Downhole perforating gun system3 cites · 202580% earned
- 238US11506465B1Apparatus and methods for disrupting/disabling explosive ordnance6 cites · 202285% earned
- 244US11709037B2Automated detonation of fireworks6 cites · 202185% earned
- 251US11105600B1Identification method in a detonator network10 cites · 202187% earned
All-time canon
The defining F42D patents of the whole record
- 199US4674047A✦ AIIntegrated detonator delay circuits and firing console251 cites · 198794% earned
- 296US6012659A✦ AIMethod for discriminating between used and unused gas generators for air bags during car s209 cites · 200094% earned
- 392US5392860A✦ AIHeat activated safety fuse207 cites · 199594% earned
- 488US6173651B1Method of detonator control with electronic ignition module, coded blast controlling unit 205 cites · 200194% earned
- 583US4884506ARemote detonation of explosive charges201 cites · 198994% earned
- 679US5090321ADetonator actuator197 cites · 199291% earned
- 775US5052489AApparatus for selectively actuating well tools194 cites · 199194% earned
- 871US5027708ASafe arm system for a perforating apparatus having a transport mode an electric contact mo194 cites · 199194% earned
- 967US5520114AMethod of controlling detonators fitted with integrated delay electronic ignition modules,181 cites · 199694% earned
- 1063US6752083B1Detonators for use with explosive devices181 cites · 200494% earned
- 1158US5394786AAcoustic/shock wave attenuating assembly174 cites · 199594% earned
- 1254US5159145AMethods and apparatus for disarming and arming well bore explosive tools161 cites · 199294% earned
- 1350US5347929AFiring system for a perforating gun including an exploding foil initiator and an outer hou158 cites · 199494% earned
- 1446US4762067ADownhole perforating method and apparatus using secondary explosive detonators157 cites · 198894% earned
- 1542US5668342AApparatus and method for detection and neutralization of concealed explosives156 cites · 199794% earned
- 1638US5436791APerforating gun using an electrical safe arm device and a capacitor exploding foil initiat147 cites · 199594% earned
- 1733US6585151B1Method for producing microporous objects with fiber, wire or foil core and microporous cel145 cites · 200393% earned
- 1829US4208966AMethods and apparatus for selectively operating multi-charge well bore guns142 cites · 198093% earned
- 1925US5767437ADigital remote pyrotactic firing mechanism142 cites · 199893% earned
- 2021US6024169AMethod for window formation in wellbore tubulars141 cites · 200090% earned
- 2117US4266613AArming device and method139 cites · 198193% earned
- 2213US9194219B1Wellbore gun perforating system and method134 cites · 201581% earned
- 238US4191265AWell bore perforating apparatus133 cites · 198093% earned
- 244US6085659AElectronic explosives initiating device132 cites · 200093% earned
- 251US7347278B2Secure activation of a downhole device128 cites · 200593% earned
Rising· last 2 yrs
Assignees whose newest F42D patents became public in the last 2 years — the current frontier
- 199SCHLUMBERGER TECHNOLOGY CORP83 patents · 3,874 citations
- 296GEODYNAMICS INC36 patents · 507 citations
- 392US NAVY69 patents · 740 citations
- 488DynaEnergetics Europe GmbH32 patents · 168 citations
- 583G&H DIVERSIFIED MFG LP11 patents · 153 citations
- 679DYNO NOBEL INC30 patents · 236 citations
- 775HUNTING TITAN INC34 patents · 247 citations
- 871DETNET SOUTH AFRICA PTY LTD56 patents · 168 citations
- 967XCONNECT LLC10 patents · 64 citations
- 1063ORICA INT PTE LTD22 patents · 75 citations
- 1158AUSTIN STAR DETONATOR CO14 patents · 44 citations
- 1254HALLIBURTON ENERGY SERVICES INC27 patents · 69 citations
- 1350SWM INT LLC5 patents · 19 citations
- 1446ENSIGN BICKFORD AEROSPACE & DEFENSE COMPANY8 patents · 12 citations
- 1542DAVEY BICKFORD6 patents · 205 citations
- 1638HANWHA CORP29 patents · 10 citations
- 1733METCALF WILLIAM C3 patents · 7 citations
- 1829SAUDI ARABIAN OIL CO4 patents · 6 citations
- 1925PACIFIC SCIENT ENERGETIC MATERIALS COMPANY CALIFORNIA LLC3 patents · 3 citations
- 2021RAIRIGH JAMES G6 patents · 1 citations
- 2117UNIV CHINA MINING3 patents · 3 citations
- 2213PARASRAM RYAN2 patents · 2 citations
- 238POINT ONE USA LLC4 patents · 1 citations
- 244DEFIANT ENG LLC3 patents · 0 citations
- 251BEIJING INSTITUTE TECH2 patents · 2 citations
Active· last 5 yrs
Sustained F42D output across the last 5 years
- 199SCHLUMBERGER TECHNOLOGY CORP83 patents · 3,874 citations
- 296GEODYNAMICS INC36 patents · 507 citations
- 392US NAVY69 patents · 740 citations
- 488DynaEnergetics Europe GmbH32 patents · 168 citations
- 583G&H DIVERSIFIED MFG LP11 patents · 153 citations
- 679BOEING CO9 patents · 153 citations
- 775DYNO NOBEL INC30 patents · 236 citations
- 871HUNTING TITAN INC34 patents · 247 citations
- 967DETNET SOUTH AFRICA PTY LTD56 patents · 168 citations
- 1063RAYTHEON CO10 patents · 90 citations
- 1158OWEN OIL TOOLS LP8 patents · 108 citations
- 1254XCONNECT LLC10 patents · 64 citations
- 1350ORICA INT PTE LTD22 patents · 75 citations
- 1446AUSTIN STAR DETONATOR CO14 patents · 44 citations
- 1542HALLIBURTON ENERGY SERVICES INC27 patents · 69 citations
- 1638SWM INT LLC5 patents · 19 citations
- 1733GREENHILL ANTIBALLISTICS CORP4 patents · 25 citations
- 1829ENSIGN BICKFORD AEROSPACE & DEFENSE COMPANY8 patents · 12 citations
- 1925LUOSSAVAARA KIIRUNAVAARA AB5 patents · 34 citations
- 2021COMMISSARIAT ENERGIE ATOMIQUE7 patents · 30 citations
- 2117FEDERAL BUREAU OF INVESTIG5 patents · 18 citations
- 2213DAVEY BICKFORD6 patents · 205 citations
- 238NOF CORP3 patents · 57 citations
- 244HANWHA CORP29 patents · 10 citations
- 251GOODRICH CORP7 patents · 12 citations
All-time canon
All-time PatentIndex Score in F42D
- 199DYNAENERGETICS GMBH & CO KG19 patents · 747 citations
- 296SCHLUMBERGER TECHNOLOGY CORP83 patents · 3,874 citations
- 392ORICA EXPLOSIVES TECH PTY LTD37 patents · 1,066 citations
- 488BAKER HUGHES INC5 patents · 510 citations
- 583GEODYNAMICS INC36 patents · 507 citations
- 679ENSIGN BICKFORD CO37 patents · 1,400 citations
- 775JET RESEARCH CENTER9 patents · 433 citations
- 871HALLIBURTON CO14 patents · 612 citations
- 967US ARMY38 patents · 883 citations
- 1063LOS ALAMOS NAT SECURITY LLC16 patents · 218 citations
- 1158JOANELL LAB INC9 patents · 166 citations
- 1254BAKER OIL TOOLS INC8 patents · 348 citations
- 1350DRESSER IND7 patents · 335 citations
- 1446ATLAS POWDER CO10 patents · 367 citations
- 1542US NAVY69 patents · 740 citations
- 1638SPECIAL DEVICES INC18 patents · 405 citations
- 1733AUSTIN POWDER CO10 patents · 257 citations
- 1829ROCKTEK LTD12 patents · 279 citations
- 1925ICI LTD5 patents · 171 citations
- 2021NITRO NOBEL AB14 patents · 351 citations
- 2117CARISELLA JAMES V4 patents · 510 citations
- 2213BATTELLE MEMORIAL INSTITUTE5 patents · 212 citations
- 238ICI AUSTRALIA LTD6 patents · 324 citations
- 244DU PONT13 patents · 339 citations
- 251DynaEnergetics Europe GmbH32 patents · 168 citations
90–99 field-defining50–89 strong<50 emergingearned by citationsfrom family breadth