Assignee
MIDREX INT BV
CH·23 granted patents·657 citations·filing 1984–2002
Top patents by PatentIndex Score
23 records- 0197US4701214AMethod of producing iron using rotary hearth and apparatusMIDREX INT BV·Filed 1986·Granted Oct 20, 1987·160 cites·24 claims
- 0290US5730775AMethod for rapid reduction of iron oxide in a rotary hearth furnaceMIDREX INT BV·Filed 1994·Granted Mar 24, 1998·98 cites·14 claims
- 0389US6749664B1Furnace hearth for improved molten iron production and method of operationMIDREX INT BV·Filed 2002·Granted Jun 15, 2004·31 cites·32 claims
- 0487US6582491B2Method for producing molten iron in duplex furnacesMIDREX INT BV·Filed 2001·Granted Jun 24, 2003·27 cites·34 claims
- 0579US5885521AApparatus for rapid reduction of iron oxide in a rotary hearth furnaceMIDREX INT BV·Filed 1997·Granted Mar 23, 1999·44 cites·6 claims
- 0677US5674308ASpouted bed circulating fluidized bed direct reduction system and methodMIDREX INT BV·Filed 1995·Granted Oct 7, 1997·39 cites·22 claims
- 0776US5437708AIron carbide production in shaft furnaceMIDREX INT BV·Filed 1994·Granted Aug 1, 1995·30 cites·25 claims
- 0875US4731112AMethod of producing ferro-alloysMIDREX INT BV·Filed 1986·Granted Mar 15, 1988·22 cites·5 claims
- 0972US4685964AMethod and apparatus for producing molten iron using coalMIDREX INT BV·Filed 1985·Granted Aug 11, 1987·22 cites·13 claims
- 1071US5618032AShaft furnace for production of iron carbideMIDREX INT BV·Filed 1995·Granted Apr 8, 1997·35 cites·18 claims
- 1170US4900356AProcess and apparatus for producing metallized pellets and scrubbing spent reducing gasMIDREX INT BV·Filed 1988·Granted Feb 13, 1990·21 cites·6 claims
- 1267US5435831ACirculating fluidizable bed co-processing of fines in a direct reduction systemMIDREX INT BV·Filed 1994·Granted Jul 25, 1995·17 cites·6 claims
- 1366US4702766AMethod of increasing carbon content of direct reduced iron and apparatusMIDREX INT BV·Filed 1986·Granted Oct 27, 1987·20 cites·13 claims
- 1461US5431711ACirculating fluidized bed direct reduction systemMIDREX INT BV·Filed 1994·Granted Jul 11, 1995·13 cites·5 claims
- 1561US4591380AMethod of generating a reducing gasMIDREX INT BV·Filed 1985·Granted May 27, 1986·14 cites·10 claims
- 1660US5647887AFluidizable bed co-processing fines in a direct reduction systemMIDREX INT BV·Filed 1995·Granted Jul 15, 1997·12 cites·9 claims
- 1759US4728358AIron bearing briquet and method of makingMIDREX INT BV·Filed 1986·Granted Mar 1, 1988·12 cites·11 claims
- 1856US6602317B2Method and apparatus for controlling temperature uniformity of the burden in a direct reduction shaft furnaceMIDREX INT BV·Filed 2001·Granted Aug 5, 2003·5 cites·19 claims
- 1953US4553742AApparatus for generating a reducing gasMIDREX INT BV·Filed 1984·Granted Nov 19, 1985·8 cites·4 claims
- 2051US4752329AApparatus and method for increasing carbon content of hot directly reduced ironMIDREX INT BV·Filed 1986·Granted Jun 21, 1988·11 cites·12 claims
- 2148US4985068AMethod and apparatus for smelting iron oxideMIDREX INT BV·Filed 1989·Granted Jan 15, 1991·9 cites·37 claims
- 2237US5529291ACirculating fluidized bed direct reduction systemMIDREX INT BV·Filed 1995·Granted Jun 25, 1996·2 cites·15 claims
- 2324US4691868AScreen sizerMIDREX INT BV·Filed 1986·Granted Sep 8, 1987·5 cites·20 claims
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