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FIERRO ESPONJA

Overview
  • Total Patents
    232
About

FIERRO ESPONJA has a total of 232 patent applications. Its first patent ever was published in 1958. It filed its patents most often in United States, Canada and United Kingdom. Its main competitors in its focus markets materials and metallurgy, environmental technology and machines are MIDREX CORP, HYLSA SA and MIDREX INTERNAT B V.

Patent filings per year

Chart showing FIERRO ESPONJAs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Celada Juan 36
#2 Celada J 35
#3 Mackay P 29
#4 Mackay Patrick W 26
#5 Mackay P W 16
#6 Mackay Patrick William 12
#7 Martinez E 12
#8 Mac Kay P 9
#9 Villasenor A 9
#10 Villarreal David 9

Latest patents

Publication Filing date Title
US4298190A Apparatus for gaseous reduction of metal ores with cooling loop
US4150972A Controlling carburization in the reduction of iron ore to sponge iron
US4121922A Method and apparatus for measuring percentage reduction in a metal ore reduction reactor
ZA765215B Method for the batchwise reduction of metal ores
US4099963A Method for the batchwise reduction of metal ores
US4046556A Direct gaseous reduction of oxidic metal ores with dual temperature cooling of the reduced product
GB1524987A Method for gaseous reduction of metal ores
US3890142A Method for gaseous reduction of metal ores
US3889864A Method and apparatus for reducing particulate metal ores to sponge iron
US3827879A Method for the gaseous reduction of metal ores
US3799521A Method and apparatus for the gaseous reduction of iron ore to sponge iron
US3904397A Method for reducing metal ores
US3816102A Method and apparatus for reducing particulate metal ores to sponge metal and cooling the reduced metal
US3770421A Method and apparatus for controlling the composition of a reducing gas used to reduce metal ores
US3779741A Method for reducing particulate metal ores to sponge iron with recycled reducing gas
GB1347785A Method of reducing particulate metal ores
US3765872A Method and apparatus for the gaseous reduction of iron ore to sponge iron
US3710808A Pressure lock for feeding particulate material to and removing it from a pressure vessel
DE1948137B2 Continuous charging plant for sponge iron - into arc melting furnace
US3681049A Method of charging electric arc steelmaking furnace