Assignee
GUNDERSON LLC
US45 patents
Top patents by PatentIndex Score
US7806058B2Oct 5, 2010
Tank car stub sill attachment
GUNDERSON LLC11 citations81
US9358987B2Jun 7, 2016
Protective structure for tank top fittings
GUNDERSON LLC7 citations79
US7861659B2Jan 4, 2011
Lightweight hopper car with through center sill
GUNDERSON LLC19 citations78
US7757610B2Jul 20, 2010
Shortened container well
GUNDERSON LLC12 citations78
US7896140B2Mar 1, 2011
Handbrake linkage for a railroad freight car
GUNDERSON LLC8 citations76
US7654206B2Feb 2, 2010
Container support casting for corner of container-carrying well car
GUNDERSON LLC7 citations74
US11142225B2Oct 12, 2021
Covered hopper car
GUNDERSON LLC2 citations73
US8371544B2Feb 12, 2013
Pipe anchor for railroad car
GUNDERSON LLC14 citations73
US11708095B2Jul 25, 2023
Discharge gate arrangements for railroad hopper cars
GUNDERSON LLC2 citations71
US10906561B2Feb 2, 2021
Discharge gate arrangements for railroad hopper cars
GUNDERSON LLC2 citations71
US9296398B2Mar 29, 2016
Protective structure for top of tank car
GUNDERSON LLC4 citations71
US10807615B2Oct 20, 2020
Covered hopper car
GUNDERSON LLC3 citations69
US10562545B2Feb 18, 2020
Covered hopper car with stiffened bulkheads
GUNDERSON LLC5 citations69
US9694828B2Jul 4, 2017
Operating mechanism for tank car bottom valve
GUNDERSON LLC5 citations66
US12202529B2Jan 21, 2025
Cover assemblies for railroad cars
GUNDERSON LLC1 citations62
US9061687B2Jun 23, 2015
Railroad car for carrying motor vehicles
GUNDERSON LLC2 citations61
US12024211B2Jul 2, 2024
Discharge gate arrangements for railroad hopper cars
GUNDERSON LLC0 citations60
US12539893B2Feb 3, 2026
Gondola railroad car
GUNDERSON LLC0 citations59
US7856931B2Dec 28, 2010
Center sill for railroad freight car
GUNDERSON LLC6 citations59
US9180893B2Nov 10, 2015
Protective structure for tank top fittings
GUNDERSON LLC2 citations58
US12005937B2Jun 11, 2024
Configurable railroad car
GUNDERSON LLC0 citations57
US7743715B2Jun 29, 2010
Air flow direction in a temperature controlled railroad freight car
GUNDERSON LLC6 citations57
US9352978B2May 31, 2016
Treatment of storm water
GUNDERSON LLC4 citations56
US12286140B2Apr 29, 2025
Railcar for transport of steel coils with removable bi-level roof
GUNDERSON LLC0 citations54
US11840268B2Dec 12, 2023
Railcar for transport of steel coils with removable bi-level roof
GUNDERSON LLC0 citations54
US11643118B2May 9, 2023
Railcar for transport of steel coils with removable bi-level roof
GUNDERSON LLC1 citations54
US11117598B2Sep 14, 2021
Auto-rack railroad car
GUNDERSON LLC0 citations53
US10871012B2Dec 22, 2020
End door latch arrangement for railroad car
GUNDERSON LLC1 citations52
US12409872B1Sep 9, 2025
Coupler cross keys
GUNDERSON LLC0 citations51
US7607396B2Oct 27, 2009
Container car side sills
GUNDERSON LLC3 citations51
US12168466B2Dec 17, 2024
Open top gondola railcars
GUNDERSON LLC0 citations50
US12077195B2Sep 3, 2024
Manway assemblies for railroad cars
GUNDERSON LLC0 citations50
US11820407B2Nov 21, 2023
Covered hopper car
GUNDERSON LLC0 citations50
US12122431B2Oct 22, 2024
Asymmetric hopper cars
GUNDERSON LLC0 citations48
US9376124B2Jun 28, 2016
Protective structure for tank top fittings
GUNDERSON LLC0 citations47
US12509129B2Dec 30, 2025
Large plate tilt railroad car
GUNDERSON LLC0 citations46
US11603121B2Mar 14, 2023
Hopper railroad car flexible top hatch cover
GUNDERSON LLC0 citations46
US12434744B2Oct 7, 2025
Door assemblies for insulated boxcars and refrigerated boxcars
GUNDERSON LLC1 citations45
US7363872B1Apr 29, 2008
Method and apparatus for use in assembly of hydrofoil skeg
GUNDERSON LLC4 citations45
US12286141B2Apr 29, 2025
Hopper railroad car having top hatch cover assembly
GUNDERSON LLC0 citations44
US10562548B2Feb 18, 2020
Attachment of articulated connectors in multi-unit freight cars
GUNDERSON LLC0 citations42
US11713061B2Aug 1, 2023
Hopper railroad car having top hatch cover assembly
GUNDERSON LLC0 citations41
US11878724B2Jan 23, 2024
Autorack cars
GUNDERSON LLC0 citations40
US11702117B2Jul 18, 2023
Stub sill assemblies
GUNDERSON LLC0 citations40
US9944302B1Apr 17, 2018
Handbrake operating linkage for railroad tank car
GUNDERSON LLC0 citations36