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GUARDIAN METALS COMPANY

Overview
  • Total Patents
    17
About

GUARDIAN METALS COMPANY has a total of 17 patent applications. Its first patent ever was published in 1921. It filed its patents most often in United States. Its main competitors in its focus markets materials and metallurgy, machines and civil engineering are BREMAT SA, CHANGSHU HUAYE STEEL STRIP CO and LEACH & GARNER CO.

Patent filings in countries

World map showing GUARDIAN METALS COMPANYs patent filings in countries
# Country Total Patents
#1 United States 17

Patent filings per year

Chart showing GUARDIAN METALS COMPANYs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Coles Henry L 16
#2 Donaldson Joseph G 12
#3 Lynn Harry H 1

Latest patents

Publication Filing date Title
US1888042A Compound alloy plate
US1815187A Safe and vault member and construction
US1860852A Ferrous alloys
US1815186A Method of casting metals
US1755913A Process for producing composite metals
US1820966A Metallic refractory material
US1775159A Metal and process of manufacture
US1673107A Refractory material
US1703662A Refractory material
US1702766A Composite metal plate
US1673106A Refractory material
US1668306A Refractory material and process of producing the same
US1698212A Metallic alloy
US1569954A Composite structural unit
US1668307A Alloy and material employing the same
US1702765A Metallic alloy and process of forming the same
US1703416A Metallic article of manufacture