Learn more

MCKENNA PROCESS COMPANY OF ILL

Overview
  • Total Patents
    18
About

MCKENNA PROCESS COMPANY OF ILL has a total of 18 patent applications. Its first patent ever was published in 1926. It filed its patents most often in United States and Canada. Its main competitors in its focus markets civil engineering, machine tools and materials and metallurgy are LEWIS BOLT & NUT COMPANY, WOODINGS VERONA TOOL WORKS and BUTZBACHER WEICHENBAU GMBH.

Patent filings in countries

World map showing MCKENNA PROCESS COMPANY OF ILLs patent filings in countries
# Country Total Patents
#1 United States 17
#2 Canada 1

Patent filings per year

Chart showing MCKENNA PROCESS COMPANY OF ILLs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 George Langford 17
#2 Langford George 1

Latest patents

Publication Filing date Title
US2060996A Rail joint
US2034046A Method of reforming rail joint bars
US2034044A Rail joint
US2034045A Method of making rail joint bars
US2034043A Method of reforming rail joint bars
US2030704A Method of repairing a rail joint in track
US2059529A Repair of rail joints in track
US1865194A Rail joint bar
US1890687A Rail joint bar
US1814835A Rail joint bar
US1914439A Method of hot straightening
US1799382A Rail joint and bar therefor
US1799381A Even-wear bar
US1799380A Tight center bar
US1732650A Renewing worn angle bars
US1724031A Method of heat-treating bars
US1712506A Means for reforming worn angle bars
CA310427A Method of heat treating steel bars