Assignee
MIDREX CORP
50 granted patents·999 citations·filing 1975–1983
Top patents by PatentIndex Score
50 records- 0196US4238226AMethod for producing molten iron by submerged combustionMIDREX CORP·Filed 1979·Granted Dec 9, 1980·76 cites·9 claims
- 0295US4270740AApparatus for producing molten iron by submerged combustionMIDREX CORP·Filed 1980·Granted Jun 2, 1981·71 cites·10 claims
- 0395US4173465AMethod for the direct reduction of iron using gas from coalMIDREX CORP·Filed 1978·Granted Nov 6, 1979·60 cites·6 claims
- 0493US4046557AMethod for producing metallic iron particlesMIDREX CORP·Filed 1975·Granted Sep 6, 1977·47 cites·13 claims
- 0591US4054444AMethod for controlling the carbon content of directly reduced ironMIDREX CORP·Filed 1975·Granted Oct 18, 1977·59 cites·12 claims
- 0688US4270739AApparatus for direct reduction of iron using high sulfur gasMIDREX CORP·Filed 1979·Granted Jun 2, 1981·35 cites·4 claims
- 0788US4260412AMethod of producing direct reduced iron with fluid bed coal gasificationMIDREX CORP·Filed 1980·Granted Apr 7, 1981·41 cites·6 claims
- 0887US4188022AHot discharge direct reduction furnaceMIDREX CORP·Filed 1978·Granted Feb 12, 1980·31 cites·7 claims
- 0986US4116679AMetallized iron briquetMIDREX CORP·Filed 1977·Granted Sep 26, 1978·23 cites·6 claims
- 1082US4032352ABinder compositionMIDREX CORP·Filed 1976·Granted Jun 28, 1977·25 cites·12 claims
- 1181US4076520AMethod for continuous passivation of sponge iron materialMIDREX CORP·Filed 1976·Granted Feb 28, 1978·33 cites·16 claims
- 1280US4316739AMethod for producing molten ironMIDREX CORP·Filed 1980·Granted Feb 23, 1982·17 cites·5 claims
- 1380US4251267AMethod for direct reduction of metal oxide to a hot metallized product in solid formMIDREX CORP·Filed 1979·Granted Feb 17, 1981·24 cites·12 claims
- 1479US4248626AMethod for producing molten iron from iron oxide with coal and oxygenMIDREX CORP·Filed 1979·Granted Feb 3, 1981·22 cites·6 claims
- 1578US4165978ABriquet sheet breaking by cooling and bendingMIDREX CORP·Filed 1978·Granted Aug 28, 1979·19 cites·5 claims
- 1678US4082543AMethod for reducing particulate iron oxide to metallic iron with solid reductantMIDREX CORP·Filed 1977·Granted Apr 4, 1978·17 cites·14 claims
- 1778US4032120AApparatus for direct reduction of sulfur-containing iron oreMIDREX CORP·Filed 1975·Granted Jun 28, 1977·15 cites·6 claims
- 1877US4235425AImpact bed gasifier-melterMIDREX CORP·Filed 1979·Granted Nov 25, 1980·18 cites·9 claims
- 1977US4201571AMethod for the direct reduction of iron and production of fuel gas using gas from coalMIDREX CORP·Filed 1978·Granted May 6, 1980·18 cites·6 claims
- 2076US4351513ADirect reduction of iron using coke oven gasMIDREX CORP·Filed 1981·Granted Sep 28, 1982·21 cites·6 claims
- 2173US4358310ADry collection of metallized finesMIDREX CORP·Filed 1981·Granted Nov 9, 1982·17 cites·10 claims
- 2272US4093455ACompacted, passivated metallized iron productMIDREX CORP·Filed 1976·Granted Jun 6, 1978·23 cites·5 claims
- 2372US4087275AMethod for direct reduction of sulfur-containing iron oreMIDREX CORP·Filed 1976·Granted May 2, 1978·12 cites·10 claims
- 2472US4033559AApparatus for continuous passivation of sponge iron materialMIDREX CORP·Filed 1976·Granted Jul 5, 1977·24 cites·15 claims
- 2571US4178151AApparatus for monitoring the feeding of particulate materials to a packed bed furnaceMIDREX CORP·Filed 1978·Granted Dec 11, 1979·13 cites·10 claims
- 2671US4002422APacked bed heat exchangerMIDREX CORP·Filed 1975·Granted Jan 11, 1977·15 cites·7 claims
- 2768US4234169AApparatus for the direct reduction of iron and production of fuel gas using gas from coalMIDREX CORP·Filed 1979·Granted Nov 18, 1980·12 cites·4 claims
- 2867US4333761AMethod for direct reduction of iron using high sulfur gasMIDREX CORP·Filed 1980·Granted Jun 8, 1982·15 cites·7 claims
- 2967US4179278AMethod for reducing particulate iron oxide to molten iron with solid reductantMIDREX CORP·Filed 1978·Granted Dec 18, 1979·11 cites·7 claims
- 3066US4439233ADirect reduction of ironMIDREX CORP·Filed 1983·Granted Mar 27, 1984·17 cites·11 claims
- 3166US4105457ABriquet and method of making sameMIDREX CORP·Filed 1977·Granted Aug 8, 1978·16 cites·6 claims
- 3263US4225340AMethod for the direct reduction of iron using gas from coalMIDREX CORP·Filed 1979·Granted Sep 30, 1980·9 cites·8 claims
- 3361US4365789AApparatus for the direct reduction of iron in a shaft furnace using gas from coalMIDREX CORP·Filed 1981·Granted Dec 28, 1982·11 cites·3 claims
- 3461US4049440AMethod for producing metallic iron pelletsMIDREX CORP·Filed 1975·Granted Sep 20, 1977·9 cites·19 claims
- 3560US4462526AContinuous briquet sheet separatorMIDREX CORP·Filed 1982·Granted Jul 31, 1984·19 cites·2 claims
- 3660US4306903AMethod for reducing particulate iron oxide to molten iron with solid reductant and oxy-fuel burnersMIDREX CORP·Filed 1980·Granted Dec 22, 1981·12 cites·6 claims
- 3759US4381939AMethod for selective reduction of metallic oxidesMIDREX CORP·Filed 1981·Granted May 3, 1983·10 cites·5 claims
- 3857US4470581AApparatus for selective reduction of metallic oxidesMIDREX CORP·Filed 1983·Granted Sep 11, 1984·9 cites·2 claims
- 3957US4140301AMethod and apparatus for reducing particulate iron oxide to metallic iron with solid reductantMIDREX CORP·Filed 1977·Granted Feb 20, 1979·7 cites·17 claims
- 4055US4331470AMethod for the direct reduction of iron in a shaft furnace using gas from coalMIDREX CORP·Filed 1980·Granted May 25, 1982·8 cites·7 claims
- 4154US4069015AMethod of inhibiting rusting of sponge ironMIDREX CORP·Filed 1975·Granted Jan 17, 1978·6 cites·38 claims
- 4253US4054443AMethod of preparing iron powderMIDREX CORP·Filed 1975·Granted Oct 18, 1977·15 cites·14 claims
- 4350US4196891ABriquet strip breakerMIDREX CORP·Filed 1979·Granted Apr 8, 1980·5 cites·16 claims
- 4449US4042226AMethod and apparatus for producing metallic iron pelletsMIDREX CORP·Filed 1975·Granted Aug 16, 1977·5 cites·5 claims
- 4546US4195821AApparatus for reducing particulate iron oxide to molten iron with solid reductantMIDREX CORP·Filed 1978·Granted Apr 1, 1980·6 cites·17 claims
- 4643US4286775AApparatus for producing molten iron from iron oxide with coal and oxygenMIDREX CORP·Filed 1980·Granted Sep 1, 1981·5 cites·9 claims
- 4742US4049441AMethod of extending the life of a catalyst in a process of producing metallic iron pelletsMIDREX CORP·Filed 1976·Granted Sep 20, 1977·7 cites·3 claims
- 4841US4248408AMethod and apparatus for reducing particulate iron oxide to molten iron with solid reductant and oxy-fuel burnersMIDREX CORP·Filed 1979·Granted Feb 3, 1981·3 cites·9 claims
- 4937US4205830AApparatus for the direct reduction of iron using gas from coalMIDREX CORP·Filed 1978·Granted Jun 3, 1980·3 cites·4 claims
- 5030US4172328AReactor dryer apparatusMIDREX CORP·Filed 1978·Granted Oct 30, 1979·3 cites·12 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →