POHANG IRON & STEEL CO., LTD.

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C21B MANUFACTURE OF IRON OR STEEL 617
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 544
 
  
 
C21D MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS 540
 
  
 
C22B PRODUCTION OR REFINING OF METALS 325
 
  
 
B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL 285
 
  
 
C22C ALLOYS 270
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 155
 
  
 
B28B SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER 127
 
  
 
C08G MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS 1119
 
  
 
C10L FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G OR C10K; LIQUEFIED PETROLEUM GAS; USE OF ADDITIVES TO FUELS OR FIRES; FIRE-LIGHTERS 141

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7045043 Method of reducing a band mark of an electroplating steel sheetJul 24, 00May 16, 06[C25B]
6955287 Method of bonding metal plates, apparatus therefor and hot strip millDec 14, 00Oct 18, 05[B21D]
6773518 Cold rolled steel sheet having excellent corrosion resistance to sulfuric acidFeb 04, 02Aug 10, 04[C22C]
6736876 Fluidized bed breakage prevention system for fluidized bed reduction reactor and methodNov 13, 01May 18, 04[C21B]
6713593 Copolymer comprising alkylene carbonate and method of preparing sameMay 14, 02Mar 30, 04[C08G]
6517604 Apparatus and method for measuring the molten metal level in electromagnetic continuous castingMar 15, 01Feb 11, 03[B22D]
6451128 Method for manufacturing high magnetic flux denshy grain oriented electrical steel sheet based on low temperature slab heating methodFeb 25, 99Sep 17, 02[H01F]
6408222 Apparatus and a method for controlling thickness of a strip in a twin roll strip casting deviceAug 23, 99Jun 18, 02[G06F]
6379420 Method and plant for producing a reducing gas serving for the reduction of metal oreJan 07, 99Apr 30, 02[C21B]
6264759 Wire rods with superior drawability and manufacturing method thereforOct 15, 99Jul 24, 01[C21D]

View all patents..

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7638088 Method and device for producing pig iron and/or pig iron intermediate productsExpiredJul 31, 08Dec 29, 09[C21B]
7425230 Method and device for producing pig iron and/or pig iron intermediate productsExpiredFeb 10, 03Sep 16, 08[C22B]
7225997 Distributor bottom for the distribution of a gas charged with fine solid particlesExpiredFeb 10, 03Jun 05, 07[B05B]
6978531 Method of manufacturing hot rolled steel sheet using mini mill processExpiredMar 04, 99Dec 27, 05[B21B]
6960238 Method and installation for the indirect reduction of particulate oxide-containing oresExpiredMar 04, 03Nov 01, 05[B28B]
6797372 Resin-coated steel for fuel tanks of automobile and method for manufacturing the sameExpiredAug 27, 01Sep 28, 04[B05D, B32B, C08K]
6667105 Coating composition for forming insulating films, non-oriented electrical steel sheet with the coating composition coated thereon, and method for forming the insulating films on the steel sheetExpiredNov 15, 01Dec 23, 03[B05D, C08L, B32B]
6645269 Process and plant for producing a metal meltExpiredOct 21, 02Nov 11, 03[C22B, C21B]
6585798 Fluidized bed reactor for preventing the fine iron ore from sticking therein and method thereofExpiredNov 21, 01Jul 01, 03[C22B, C21B]
6565671 Surface-treated steel sheet coated with chromate film for fuel tanks and method of fabricating the sameExpiredJul 20, 01May 20, 03[C23C]
6491738 2-stage fluidized bed type fine iron ore reducing apparatus, and reducing method using the apparatusExpiredFeb 20, 01Dec 10, 02[C22B, C21B]
6491864 Plant for charging metal carriers to melt-down gasifying zoneExpiredJun 19, 01Dec 10, 02[C21B]
2002/0136,670 Device for preventing back mixture in fluidized bed reactorAbandonedJan 22, 02Sep 26, 02[B01J]
6427507 Apparatus for measuring the strip flatnessExpiredFeb 28, 01Aug 06, 02[B21B]
6416566 Process for the production of liquid pig iron or liquid steel pre-productsExpiredDec 28, 98Jul 09, 02[C21B]
6387538 Surface-treated steel sheet for fuel tanks and method of fabricating sameExpiredMay 08, 00May 14, 02[C23C, C25D, B32B]
6346212 ConverterExpiredApr 25, 00Feb 12, 02[C21B]
6319458 Pulverized coal injecting apparatusExpiredMar 31, 00Nov 20, 01[C21B]
6315029 Continuous casting method, and device thereforExpiredMar 31, 00Nov 13, 01[B22D]
6315943 Apparatus for producing molten metalExpiredJun 15, 99Nov 13, 01[C21B]

View all patents..

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.