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CALVIN AMORY STEVENS

Overview
  • Total Patents
    20
About

CALVIN AMORY STEVENS has a total of 20 patent applications. Its first patent ever was published in 1895. It filed its patents most often in United States, Canada and France. Its main competitors in its focus markets materials and metallurgy, machines and surface technology and coating are THERMICAL IP PTY LTD, GOCK EBERHARD and SAMARCO MINERACAO SA.

Patent filings in countries

World map showing CALVIN AMORY STEVENSs patent filings in countries
# Country Total Patents
#1 United States 14
#2 Canada 2
#3 France 2
#4 Australia 1
#5 United Kingdom 1

Patent filings per year

Chart showing CALVIN AMORY STEVENSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Collins Caleb G 11
#2 Hilsinger Alburtis C 3
#3 Stevens Calvin Amory 2
#4 Collins Caleb Grozier 1
#5 Caleb Grozier Collins Minion Engineer Woodmore Naasan New York U Sa 1
#6 Collins Caleb Crozier 1
#7 Hilsinger Adin W 1

Latest patents

Publication Filing date Title
GB160760A Process for the reduction of ores
AU1432909B Improvements in-process of extracting metal from ore
US919130A Process of extracting copper from ores.
US702047A Process of rendering metallic sulfids soluble.
US666302A Process of making paint.
US668283A Amalgamation of ores.
US708640A Pulverizer.
US659340A Process of extracting zinc and copper from their ores.
US659339A Process of extracting copper and zinc from their ores.
US659338A Process of extracting zinc and copper from their ores.
US642584A Reduction of metallic ores.
US668290A Dumping-dock.
US668282A Amalgamator.
US648354A Process of extracting metals from their ores.
US666262A Process of making paint.
US653771A Stone or ore crusher.
CA222732A Reduction of ores
CA222733A Treatment of ores