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INTERNAT SMELTING & REFINING C

Overview
  • Total Patents
    11
About

INTERNAT SMELTING & REFINING C has a total of 11 patent applications. Its first patent ever was published in 1937. It filed its patents most often in United States. Its main competitors in its focus markets materials and metallurgy, surface technology and coating and electrical machinery and energy are METALLURG DE HOBOKEN SA SOC GE, DRINKARD RES AND DEV CORP and ANTOINE HENRI IMBERT.

Patent filings in countries

World map showing INTERNAT SMELTING & REFINING Cs patent filings in countries
# Country Total Patents
#1 United States 11

Patent filings per year

Chart showing INTERNAT SMELTING & REFINING Cs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Olsen Rangwald S 2
#2 Wallace Shropshire William 2
#3 Hulme Philip M 2
#4 George Anderson 2
#5 Ghelardi Robert A 2
#6 Frohman Amson L 1
#7 Knox Jr William J 1
#8 Woll Wesley G 1
#9 Clayton Noddings William 1
#10 Kelly Richard A 1

Latest patents

Publication Filing date Title
US2411940A Refining zinciferous lead
US2442674A Deleading zinc-lead fume
US2256481A Producing flat-set copper shapes
US2265284A Melting copper
US2297578A Automatic constant current controller
US2258963A Production of tellurium
US2341244A Electrolytic production of alloys
US2333578A Electrolytic chromate production
US2242634A Electrolytic production of lead chromates
US2156420A Metal vaporizing furnace
US2174559A Vaporizing furnace for zinc and other metals