HOFFMAN & SONS TECHNOLOGIES, LLC

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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 320
 
  
 
C21C PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL 216
 
  
 
C22B PRODUCTION OR REFINING OF METALS 226
 
  
 
B03B SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS 18
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 138

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9404165 Producing of pig iron from iron-containing materialsAug 22, 13Aug 02, 16[C22B, C21B]
8545593 Direct processing of metallic ore concentrates into ferroalloysOct 24, 11Oct 01, 13[C22B, B03C, B03B, C21C, C21B]
7985389 Direct processing of ferrotitania ores and sandsAug 12, 08Jul 26, 11[C22B, C01G, C21C, C21B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8420007 Apparatus for direct smelting of zinc bearing compounds to produce metallic zincExpiredSep 20, 11Apr 16, 13[C22B]
8043408 Direct smelting of zinc bearing compounds to produce metallic zincExpiredAug 12, 08Oct 25, 11[C22B]

Top Inventors for This Owner

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