MIDREX TECHNOLOGIES, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C21B MANUFACTURE OF IRON OR STEEL 274
 
  
 
C22B PRODUCTION OR REFINING OF METALS 1018
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF673
 
  
 
C21C PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL 414
 
  
 
F27B FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS420
 
  
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 421
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 3106
 
  
 
C10K PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE215
 
  
 
B05B SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES 163
 
  
 
C22C ALLOYS 171

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0017,447 METHODS AND SYSTEMS FOR PRODUCING DIRECT REDUCED IRON UTILIZING A PETROLEUM REFINERY BOTTOMS OR PETROLEUM COKE GASIFIER AND A HOT GAS CLEANERJul 14, 15Jan 21, 16[C21B]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9868999 Methods and systems for producing direct reduced iron utilizing a petroleum refinery bottoms or petroleum coke gasifier and a hot gas cleanerJul 14, 15Jan 16, 18[C10K, C21B]
9695492 Methods and systems for producing ferro-chrome in a duplex furnaceMay 30, 14Jul 04, 17[C22B, C21C, C22C, C21B]
9534265 Methods and systems for producing direct reduced iron incorporating a carbon dioxide and steam reformer fed by recovered carbon dioxideDec 15, 14Jan 03, 17[F27B, F27D, C21B]
9534275 Methods and systems for reducing chromium containing raw materialMar 06, 14Jan 03, 17[C22B]
9175910 Devices and methods for enhancing burden uniformity in a combination reforming/reducing shaft furnaceOct 01, 13Nov 03, 15[F27B, F27D, C21B]
9127326 System and method for reducing iron oxide to metallic iron using natural gasNov 01, 13Sep 08, 15[C21B]
9039794 Reformer tube apparatus having variable wall thickness and associated method of manufactureNov 05, 10May 26, 15[C01B, B01J, C21B]
9028585 System and method for reducing iron oxide to metallic iron using coke oven gas and oxygen steelmaking furnace gasJul 31, 13May 12, 15[C21B]
8999033 Method and system for producing direct reduced iron and/or hot metal using brown coalDec 14, 11Apr 07, 15[C22B, C21B]
8871000 Electric furnace for producing molten metal having material recycling capabilityNov 29, 11Oct 28, 14[C22B, F27B, C21C, C21B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6802886 Method of producing a metallized briquetteExpiredMay 10, 01Oct 12, 04[C21B]
6360458 Rake attachment for skid steer loaders and front end loaders and method for converting a loader bucket into a lawn preparation toolExpiredOct 26, 99Mar 26, 02[E02F]
2002/0007,699 Apparatus and method for optimizing the use of oxygen in the direct reduction of ironAbandonedMar 23, 01Jan 24, 02[C21C]
5674308 Spouted bed circulating fluidized bed direct reduction system and methodExpiredSep 13, 95Oct 07, 97[C22B, C21B]

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