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AC SPARK PLUG CO

Overview
  • Total Patents
    642
About

AC SPARK PLUG CO has a total of 642 patent applications. Its first patent ever was published in 1918. It filed its patents most often in United States, United Kingdom and Canada. Its main competitors in its focus markets engines, pumps and turbines, measurement and electrical machinery and energy are STEWART WARNER SPEEDOMETER, PARR MFG INC and HEIDE WILLIAM A.

Patent filings in countries

World map showing AC SPARK PLUG COs patent filings in countries
# Country Total Patents
#1 United States 366
#2 United Kingdom 85
#3 Canada 76
#4 France 76
#5 Germany 36
#6 Austria 3

Patent filings per year

Chart showing AC SPARK PLUG COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Joseph Zubaty 60
#2 Hector Rabezzana 50
#3 Mckinley Charles W 32
#4 Kamrath Herbert G 27
#5 Albert Champion 24
#6 Babitch Abraham M 18
#7 Eshbaugh Jesse E 18
#8 Joseph Berge 15
#9 Rabezzana Hector 14
#10 Helgeby Ralph O 14

Latest patents

Publication Filing date Title
DE633367C Coupling device for windshield wipers driven by the machine
GB433344A Windscreen wiper mechanism
GB441464A Improvements relating to manufacture of electron emitters and alloy used therein
DE628775C Spark plug
GB407282A Improvements relating to spark plugs
US1957803A Spark plug tester
US2003420A Fuel pump
GB407275A Improvements relating to the manufacture of spark plugs
US1957802A Spark plug tester
GB418611A Improvements relating to glow plugs for use particularly with compression ignition engines
GB418298A Improvements in the manufacture of alloys
GB407191A Improvements relating to variable stroke pumps
US1940317A Oil filter element
GB394187A Vacuum pump
GB395195A Improvements in and relating to fuel pumps
GB384958A Improvements in and relating to movable resistance contacts for electrical liquid level indicators
US1940316A Liquid filter
US1919475A Rear vision mirror
US1919479A Process of making alloys
GB396514A Improvements relating to electron emitters and to the manufacture of the same