Assignee
MIDREX TECHNOLOGIES INC
US·23 granted patents·8 pending applications·160 citations·filing 1999–2025
Top patents by PatentIndex Score
31 records- 0192US6802886B2Method of producing a metallized briquetteMIDREX TECHNOLOGIES INC·Filed 2001·Granted Oct 12, 2004·30 cites·8 claims
- 0291US11499201B2Direct reduction process utilizing hydrogenMIDREX TECHNOLOGIES INC·Filed 2020·Granted Nov 15, 2022·5 cites·12 claims
- 0390US8377417B2Method and apparatus for sequestering carbon dioxide from a spent gasMIDREX TECHNOLOGIES INC·Filed 2010·Granted Feb 19, 2013·9 cites·14 claims
- 0489US7678176B2Method and apparatus for charging hot direct reduced iron from hot transport vessels into a melter or finisherMIDREX TECHNOLOGIES INC·Filed 2007·Granted Mar 16, 2010·11 cites·5 claims
- 0586US6524356B2Method and apparatus for producing reformed gasesMIDREX TECHNOLOGIES INC·Filed 1999·Granted Feb 25, 2003·55 cites·15 claims
- 0679US2026071288A1Hot Metal Production from DRI with Electric Arc HeatingMIDREX TECHNOLOGIES INC·Filed 2025·Application pending·0 cites
- 0776US7938882B2Method and system for the supply of hot direct reduced iron for multiple usesMIDREX TECHNOLOGIES INC·Filed 2008·Granted May 10, 2011·3 cites·14 claims
- 0874US6251156B1Method of producing molten iron in duplex furnacesMIDREX TECHNOLOGIES INC·Filed 1999·Granted Jun 26, 2001·30 cites·20 claims
- 0974US2023034215A1Direct reduction system utilizing hydrogenMIDREX TECHNOLOGIES INC·Filed 2022·Application pending·0 cites
- 1072US12497668B2Hot metal production from DRI with electric arc heatingMIDREX TECHNOLOGIES INC·Filed 2023·Granted Dec 16, 2025·0 cites·11 claims
- 1172US12421564B2Iron (DRI) between a DRI source and processing equipment for the DRIMIDREX TECHNOLOGIES INC·Filed 2023·Granted Sep 23, 2025·0 cites·6 claims
- 1272US12098436B2Seal gas optimization systems and methods for a direct reduction processMIDREX TECHNOLOGIES INC·Filed 2023·Granted Sep 24, 2024·0 cites·4 claims
- 1369US2025162864A1Methods and systems to produce high quality syngas for the production of direct reduced iron (dri) while maintaining high energy efficiencyMIDREX TECHNOLOGIES INC·Filed 2024·Application pending·0 cites
- 1468US11781194B2HBI slow cooling system and methodMIDREX TECHNOLOGIES INC·Filed 2021·Granted Oct 10, 2023·0 cites·20 claims
- 1568US6506230B2Method for increasing productivity of direct reduction processMIDREX TECHNOLOGIES INC·Filed 2001·Granted Jan 14, 2003·10 cites·6 claims
- 1668US2025369061A1Direct reduction system and method to mitigate the disintegration of iron oxide during a reduction reactionMIDREX TECHNOLOGIES INC·Filed 2024·Application pending·0 cites
- 1767US11965221B2Method and system for heating direct reduced iron (DRI) between a DRI source and processing equipment for the DRIMIDREX TECHNOLOGIES INC·Filed 2021·Granted Apr 23, 2024·0 cites·16 claims
- 1867US2025163527A1Method and system to produce a direct reduced iron product with multiple carbon levels from a single shaft furnaceMIDREX TECHNOLOGIES INC·Filed 2024·Application pending·0 cites
- 1966US11655511B2Seal gas optimization systems and methods for a direct reduction processMIDREX TECHNOLOGIES INC·Filed 2020·Granted May 23, 2023·0 cites·14 claims
- 2066US6602322B2High temperature metal recovery processMIDREX TECHNOLOGIES INC·Filed 2001·Granted Aug 5, 2003·7 cites·13 claims
- 2165US2025163526A1Electric gas heating system and method in a direct reduction plant utilizing hydrogen or natural gasMIDREX TECHNOLOGIES INC·Filed 2024·Application pending·0 cites
- 2265US2025197956A1Method and system for removing carbon deposit at electric heating system in a direct reduction plant utilizing hydrogenMIDREX TECHNOLOGIES INC·Filed 2024·Application pending·0 cites
- 2360US12000011B2System and method for the production of hot briquetted iron (HBI) containing flux and/or carbonaceous material at a direct reduction plantMIDREX TECHNOLOGIES INC·Filed 2022·Granted Jun 4, 2024·0 cites·31 claims
- 2458US12084730B2Methods and systems for increasing the carbon content of direct reduced iron in a reduction furnaceMIDREX TECHNOLOGIES INC·Filed 2021·Granted Sep 10, 2024·0 cites·8 claims
- 2557US2023052345A1Method for recycling spent reduction gas in a direct reduction of iron ore system utilizing an electric gas heaterMIDREX TECHNOLOGIES INC·Filed 2022·Application pending·0 cites
- 2656US11788159B2Integration of DR plant and electric DRI melting furnace for producing high performance ironMIDREX TECHNOLOGIES INC·Filed 2021·Granted Oct 17, 2023·0 cites·23 claims
- 2754US11920204B2Oxygen injection for reformer feed gas for direct reduction processMIDREX TECHNOLOGIES INC·Filed 2020·Granted Mar 5, 2024·0 cites·12 claims
- 2851US11952638B2Direct reduction process utilizing hydrogenMIDREX TECHNOLOGIES INC·Filed 2020·Granted Apr 9, 2024·0 cites·13 claims
- 2951US10907224B2Direct reduction system and process utilizing a process gas direct recycle lineMIDREX TECHNOLOGIES INC·Filed 2018·Granted Feb 2, 2021·0 cites·10 claims
- 3047US9988586B2Systems and methods for the use of Fischer-Tropsch tail gas in a gas to liquid processMIDREX TECHNOLOGIES INC·Filed 2012·Granted Jun 5, 2018·0 cites·6 claims
- 3146US10988817B2Oxygen injection system for a direct reduction processMIDREX TECHNOLOGIES INC·Filed 2019·Granted Apr 27, 2021·0 cites·19 claims
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