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SPARKS WITHINGTON CO

Overview
  • Total Patents
    249
About

SPARKS WITHINGTON CO has a total of 249 patent applications. Its first patent ever was published in 1910. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets consumer goods, electrical machinery and energy and transport are LOVELL MCCONNELL MFG CO, SEISS GEORGE J and AUFIERO EMANUEL.

Patent filings in countries

World map showing SPARKS WITHINGTON COs patent filings in countries
# Country Total Patents
#1 United States 122
#2 Canada 69
#3 United Kingdom 22
#4 France 19
#5 Germany 10
#6 Switzerland 4
#7 Austria 3

Patent filings per year

Chart showing SPARKS WITHINGTON COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Scofield Theodore J 56
#2 Sparks William 28
#3 William Sparks 25
#4 Winchell Arthur B 21
#5 Kayko Charles J 13
#6 Billig Fred W 12
#7 Johnson Lloyd E 9
#8 Seeley Stuart W 6
#9 White George A 6
#10 Elmer Johnson Lloyd 5

Latest patents

Publication Filing date Title
US2958307A Horn with plastic projector
US2854660A Horn circuit
US2830146A Directional signal switch mechanism
US2642028A Universal mounting for tension disk for air horns
US2670467A High and low volume horn
US2651688A Turn indicator with automatic cancellation
US2524655A Refrigerator assembly
US2534546A Two-temperature table top refrigerator
US2490861A Electrohydraulic lift system for refrigerators and the like
US2518764A Table top refrigerator with elevating interior
US2568973A Deep well cooker with adjustable heating element
US2485990A Deep well cooker for electric stoves having elevatable heating element
US2369143A Projection screen
US2324422A Suction cleaner
US2346257A Projection screen
US2349371A Air cleaning device
US2328172A Warning signaling system
GB534989A Improvements in or relating to audible warning signals for vehicles
GB533088A Improvements in or relating to warning horns
GB522508A Improvements in or relating to an electric reciprocating motor for warning signals and the like