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ELECTRIC RAILWAY IMPROVEMENT CO

Overview
  • Total Patents
    58
About

ELECTRIC RAILWAY IMPROVEMENT CO has a total of 58 patent applications. Its first patent ever was published in 1907. It filed its patents most often in United States, France and Canada. Its main competitors in its focus markets machines, machine tools and transport are UNA WELDING INC, HOLLUP CORP and WASSERMAN RENE D.

Patent filings in countries

World map showing ELECTRIC RAILWAY IMPROVEMENT COs patent filings in countries
# Country Total Patents
#1 United States 45
#2 France 6
#3 Canada 5
#4 Austria 1
#5 Germany 1

Patent filings per year

Chart showing ELECTRIC RAILWAY IMPROVEMENT COs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Cadwell Charles A 30
#2 Carlson Noble G 6
#3 Neff Frank H 5
#4 Kjellgren John G 3
#5 Huber William E 1
#6 Smith Benjamin A 1
#7 Caldwell Charles A 1
#8 Crecelius Lawrence P 1
#9 Stanton Mark T 1
#10 Herrick Albert B 1

Latest patents

Publication Filing date Title
US2482093A Process for aluminothermic welding
US2464210A Welding materials and processes
US2408291A Welding material and process
US2383040A Exothermic reaction charge
US2398768A Exothermic reaction charge
US2387715A Welding materials and processes
US2360758A Rail bonding apparatus
US2355627A Welding
US2401048A Rail bonding apparatus
US2276823A Rail bonding apparatus
US2277014A Rail bonding apparatus
US2251820A Rail bond
US2229045A Material for use in welding
US2251978A Rail cleaning device
US2262755A Rail bonding apparatus
US2237698A Rail bond
US2238926A Welding
US2109791A Rail bond and method of securing same to rails
US2149043A Method of making rail bonds
US1979529A Electric metal working method and apparatus