DONGKUK STEEL MILL CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 285
 
  
 
B05C APPARATUS FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 144
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
C23C COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL 1100

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0076,127 APPARATUS FOR PRODUCING HOT-DOP METAL COATED STEEL SHEET WITH SUPERIOR WORKABILITY AND CORROSION RESISTANCENov 13, 15Mar 17, 16[C23C]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9863029 Apparatus for forming nitrogen cloud to produce hot dip coated steel sheetNov 13, 15Jan 09, 18[C23C, B05C, B05D]
7244511 Color steel sheet with embossed patterns on one side thereofJan 04, 06Jul 17, 07[B32B]
5571566 Method of manufacturing a coated steelJan 30, 95Nov 05, 96[B05D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0184,275 Method and apparatus for producing zinc-aluminum alloy-coated steel sheet with superior workability and corrosion resistanceAbandonedJan 12, 15Jul 02, 15[C23C]
2014/0037,856 Method and apparatus for producing zinc-aluminum alloy-coated steel sheet with superior workability and corrosion resistanceAbandonedJul 25, 13Feb 06, 14[C23C]

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