Assignee
SPARTON CORP
US65 patents
Top patents by PatentIndex Score
US4892014AJan 9, 1990
Electronic controller for automatic transmissions
SPARTON CORP197 citations94
US5311581AMay 10, 1994
Remote meter reading method and apparatus
SPARTON CORP92 citations93
US5010568AApr 23, 1991
Remote meter reading method and apparatus
SPARTON CORP58 citations93
US5251877AOct 12, 1993
Sheave plate and cable assembly for a tire lift/carrier winch
SPARTON CORP33 citations91
US5125628AJun 30, 1992
Sheave and cable assembly for a tire lift/carrier winch
SPARTON CORP36 citations91
US5415377AMay 16, 1995
Sheave assembly for a tire lift/carrier winch
SPARTON CORP30 citations90
US5251723AOct 12, 1993
Service brake and shift lever interlock system
SPARTON CORP32 citations90
US5129494AJul 14, 1992
Service brake and shift lever interlock system
SPARTON CORP35 citations90
US5062344ANov 5, 1991
Bowline knot in a braided line
SPARTON CORP385 citations90
US5018610AMay 28, 1991
Service brake and shift lever interlock system
SPARTON CORP42 citations90
US5266921ANov 30, 1993
Method and apparatus for adjusting vehicle horns
SPARTON CORP23 citations89
US5161182ANov 3, 1992
Remote meter reading method and apparatus
SPARTON CORP29 citations89
US5181592AJan 26, 1993
Shift lever interlock system
SPARTON CORP31 citations88
US4709360ANov 24, 1987
Hydrophone transducer with negative feedback system
SPARTON CORP34 citations87
US4628315ADec 9, 1986
Addressable transducer with improved address signal processing
SPARTON CORP41 citations86
US5293149AMar 8, 1994
Vehicle horn with electronic solid state energizing circuit
SPARTON CORP27 citations84
US5379267AJan 3, 1995
Buoyancy control system
SPARTON CORP40 citations83
US3978903ASep 7, 1976
Tubeless tire bead seater
SPARTON CORP38 citations83
US5414406AMay 9, 1995
Self-tuning vehicle horn
SPARTON CORP34 citations81
US3972018AJul 27, 1976
Electromechanical transducer
SPARTON CORP25 citations81
US5267714ADec 7, 1993
Fuel tank hanger strap
SPARTON CORP22 citations80
US5070427ADec 3, 1991
Thermal switch for battery protection
SPARTON CORP22 citations80
US4433750AFeb 28, 1984
Synthetic horn projector with metal insert
SPARTON CORP20 citations79
US5289907AMar 1, 1994
Shift lever interlock system
SPARTON CORP17 citations77
US9841145B1Dec 12, 2017
Axial piercing mechanism for pressurized gas canister
SPARTON CORP11 citations75
US4399440AAug 16, 1983
Addressable transducer with a variable frequency oscillation for monitoring a physical quantity
SPARTON CORP25 citations75
US5049853ASep 17, 1991
Electric horn with solid state driver
SPARTON CORP21 citations74
US4717906AJan 5, 1988
Electric horn with improved pole piece and adjusting cap
SPARTON CORP13 citations74
US10973140B2Apr 6, 2021
Method for assembling a printed circuit board assembly
SPARTON CORP1 citations71
US10420239B2Sep 17, 2019
Control of electric field effects in a printed circuit board assembly using embedded nickel-metal composite materials
SPARTON CORP1 citations71
US4441099AApr 3, 1984
Diaphragm horn
SPARTON CORP10 citations71
US4399427AAug 16, 1983
Reverse alarm
SPARTON CORP8 citations71
US4361952ADec 7, 1982
Method of adjusting air gap of an electric horn
SPARTON CORP16 citations71
US5265708ANov 30, 1993
Clutch for tire lift/carrier winch
SPARTON CORP7 citations70
US4986143AJan 22, 1991
Transmission shift control mechanism with park lock
SPARTON CORP18 citations70
US4949069AAug 14, 1990
Dynamic liquid level indicator
SPARTON CORP14 citations70
US4936158AJun 26, 1990
Transmission shift control mechanism with park lock
SPARTON CORP19 citations70
US4813123AMar 21, 1989
Method of adjusting an electric horn air gap
SPARTON CORP13 citations70
US4338978AJul 13, 1982
Lead chloride battery plate
SPARTON CORP10 citations70
US4262069AApr 14, 1981
Lead chloride battery plate
SPARTON CORP7 citations70
US5065604ANov 19, 1991
Ignition interlock system
SPARTON CORP19 citations69
US3953829AApr 27, 1976
Partially filled fluid damped geophone
SPARTON CORP24 citations69
US4323786AApr 6, 1982
Seam detection and control system
SPARTON CORP16 citations68
US4389575AJun 21, 1983
Fabric inspection system
SPARTON CORP17 citations66
US4029233AJun 14, 1977
Sonobuoy retainer plate
SPARTON CORP11 citations66
US4733597AMar 29, 1988
Sequential launching system
SPARTON CORP14 citations65
US4738421AApr 19, 1988
Self-orienting device
SPARTON CORP9 citations64
US9612085B2Apr 4, 2017
Payload launch system and method
SPARTON CORP4 citations63
US4249081AFeb 3, 1981
Defect detection system
SPARTON CORP14 citations63
US5006841AApr 9, 1991
Addressable transducer with improved response signal processing
SPARTON CORP9 citations62
Showing the top 50 of 65 patents by PatentIndex Score.