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CHARMAN WALTER M

Overview
  • Total Patents
    25
About

CHARMAN WALTER M has a total of 25 patent applications. Its first patent ever was published in 1929. It filed its patents most often in United States and Canada. Its main competitors in its focus markets materials and metallurgy and machines are CONTINUA INT, INDREF OY and CENTRIFUGAL PIPE CORP.

Patent filings in countries

World map showing CHARMAN WALTER Ms patent filings in countries
# Country Total Patents
#1 United States 16
#2 Canada 9

Patent filings per year

Chart showing CHARMAN WALTER Ms patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Materials and metallurgy
#2 Machines

Top inventors

# Name Total Patents
#1 Charman Walter M 25

Latest patents

Publication Filing date Title
US2574815A Bottom ring for hot tops and mounting means therefor
US2258483A Hot top
US2147147A Hot top for big-end-down ingot molds
US2080848A Ring securing means
US1997677A Protector for hot top rings
US2029058A Hot top and lining therefor
US2088288A Slab hot top
US2030199A Mold extension for ingot molds
US1969726A Hot top
US1945880A Hot top
US1921732A Hot top
US2129821A Bottom ring for hot tops
US1921730A Lining for hot tops
US1921729A Hot top
US1804208A Hot top
US1804205A Lining for hot tops
CA325222A Hot top lining
CA334802A Ingot mould hot top
CA342890A Ingot-mould hot top ring
CA409876A Mould hot top