Assignee
HARSCO CORP
US137 patents
Top patents by PatentIndex Score
US4763690AAug 16, 1988
Leak-proof valve for gas cylinders
HARSCO CORP79 citations96
US5327346AJul 5, 1994
Automatic control for central tire inflation system
HARSCO CORP88 citations95
US4368986AJan 18, 1983
Dual shell blender with intensifier
HARSCO CORP64 citations95
US4350318ASep 21, 1982
Tie plate
HARSCO CORP53 citations94
USD337411SJul 13, 1993
Lifting magnet
HARSCO CORP29 citations93
US5186109AFeb 16, 1993
Side shift railway guide wheel apparatus for rail/highway conversion with V-shaped automatic centering surfaces for centering vehicle relative to the rails
HARSCO CORP35 citations92
US4951573AAug 28, 1990
Tie remover and inserter
HARSCO CORP28 citations92
US4733896AMar 29, 1988
Lift container and method for using same
HARSCO CORP29 citations92
US4716811AJan 5, 1988
Double toggle gripping apparatus
HARSCO CORP54 citations92
US4706825ANov 17, 1987
Portable folding bridge crane
HARSCO CORP30 citations92
US4493578AJan 15, 1985
Scaffolding connector and system
HARSCO CORP45 citations92
US4481748ANov 13, 1984
Shoring system and parts thereof
HARSCO CORP56 citations92
US4430019AFeb 7, 1984
Connector assembly
HARSCO CORP42 citations92
US4408922AOct 11, 1983
Coupler
HARSCO CORP28 citations92
US5542355AAug 6, 1996
Tie plate track fastener feeder
HARSCO CORP24 citations91
US5487341AJan 30, 1996
Spiker with hole sensing
HARSCO CORP60 citations91
US4611784ASep 16, 1986
Safety lock for jump scaffolding
HARSCO CORP50 citations91
US4422617ADec 27, 1983
Edge joist
HARSCO CORP38 citations91
US5048424ASep 17, 1991
Tie replacer and method
HARSCO CORP29 citations90
US4473209ASep 25, 1984
Prefabricated wall form modular unit
HARSCO CORP60 citations90
US4467853AAug 28, 1984
Door with guide insulation and weatherstripping
HARSCO CORP78 citations90
US5359815ANov 1, 1994
Profile grinder
HARSCO CORP22 citations89
US5305692AApr 26, 1994
Truck mounted tie exchanger with self-aligning tie clamp
HARSCO CORP27 citations89
US5197389AMar 30, 1993
Tie replacer
HARSCO CORP24 citations89
US4918927AApr 24, 1990
Cryogenic liquid container
HARSCO CORP44 citations89
US4671382AJun 9, 1987
Scaffolding system for sloped surfaces
HARSCO CORP42 citations89
US4462197AJul 31, 1984
Shoring system and parts thereof
HARSCO CORP35 citations89
US5915744AJun 29, 1999
Rail anchor removal
HARSCO CORP19 citations88
US4494162AJan 15, 1985
Starter thermal overload protection system
HARSCO CORP40 citations88
US5722325AMar 3, 1998
Tie guide and plate holding apparatus
HARSCO CORP27 citations87
US5617795AApr 8, 1997
Tie guide and plate holding apparatus
HARSCO CORP27 citations87
US5330155AJul 19, 1994
Pressure-loaded cylinder valve insert
HARSCO CORP32 citations87
US4911194AMar 27, 1990
Thermally-sensitive coupling device
HARSCO CORP30 citations87
US4236441ADec 2, 1980
Field artillery ammunition support vehicle
HARSCO CORP31 citations87
US4178724ADec 18, 1979
Rail grinding system
HARSCO CORP44 citations87
US4134949AJan 16, 1979
Method to form a bell end in a plastic pipe
HARSCO CORP33 citations87
US5979692ANov 9, 1999
Boss for composite pressure vessel having polymeric liner
HARSCO CORP80 citations86
US5660115AAug 26, 1997
Vertically actuated rail guide wheels
HARSCO CORP24 citations86
US4436136AMar 13, 1984
Insulated slat
HARSCO CORP48 citations86
US4003543AJan 18, 1977
Column lift bracket
HARSCO CORP49 citations86
USD331470SDec 1, 1992
Grating
HARSCO CORP28 citations85
US4867201ASep 19, 1989
Parallel-motion dual-diaphragm valve
HARSCO CORP66 citations85
US4569391AFeb 11, 1986
Compact heat exchanger
HARSCO CORP61 citations85
US4196079AApr 1, 1980
Pleated filter underdrain, method and apparatus
HARSCO CORP31 citations85
US5619931AApr 15, 1997
Road and rail using rail wheel drive and apparatus
HARSCO CORP19 citations84
US6105723AAug 22, 2000
Steel plank for scaffolding
HARSCO CORP16 citations83
US5662100ASep 2, 1997
Eductive pressure regulator
HARSCO CORP23 citations83
US9920487B2Mar 20, 2018
Track maintenance apparatus and method
HARSCO CORP6 citations82
US8606439B2Dec 10, 2013
Drone vehicle
HARSCO CORP5 citations82
US4516663AMay 14, 1985
Safety device
HARSCO CORP53 citations82
Showing the top 50 of 137 patents by PatentIndex Score.