NKK Corporation

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22C ALLOYS 2844
 
  
 
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 1629
 
  
 
B21B ROLLING OF METAL 923
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM9148
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 841
 
  
 
G01N INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES 7199
 
  
 
C25D PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING 546
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 579
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 452
 
  
 
G01J MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY 474

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7599052 Method for marking defect and device thereforAug 13, 08Oct 06, 09[A47L, G01N]
7448430 Manufacturing method for continuously cast product of steelNov 08, 06Nov 11, 08[B22D]
7423744 Method for marking defect and device thereforOct 24, 06Sep 09, 08[G01N]
7361385 Method for manufacturing hot-dip plated metal strip and apparatus for manufacturing the sameNov 07, 02Apr 22, 08[B05D]
7248366 Method for marking defect and device thereforSep 17, 01Jul 24, 07[G01N]
RE39475 Digitizer having flat tablet with magnetic shield plateJun 08, 94Jan 23, 07[G08C]
7156148 Manufacturing method for continuously cast product of steelMar 21, 05Jan 02, 07[B22D]
7137283 Plate reduction press apparatus and methodsMar 24, 03Nov 21, 06[B21B]
6896035 Manufacturing method for continuously cast product of steelDec 18, 02May 24, 05[B22D]
6869691 High strength hot-dip galvanized steel sheet and method for manufacturing the sameOct 17, 02Mar 22, 05[C21D, B32B, C22C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2005/0092,133 Method for manufacturing hot metal desulfurizing agent and apparatus for sameAbandonedDec 13, 04May 05, 05[C21C]
6887820 Method for producing optically active compoundsExpiredSep 14, 00May 03, 05[C07F, C07C, B01J]
6880619 HEAT TREATING PLANT, INSTALLATION METHOD FOR POROUS REGENERATIVE ELEMENT, PRODUCTION METHOD FOR HEAT TREATED SUBSTANCE, SELECTION METHOD FOR POROUS REGENERATIVE ELEMENT, AND SPENT POROUS REGENERATIVE ELEMENT COMPONENT MEMBERExpiredMay 31, 01Apr 19, 05[F28D]
6837093 Methods for making an easy-opening can endExpiredMar 20, 02Jan 04, 05[B21D]
6837916 Smelting reduction methodExpiredOct 10, 01Jan 04, 05[C21B]
6815573 Method of decomposing halogenated hydrocarbon gasExpiredDec 03, 01Nov 09, 04[A62D]
6770140 Apparatus for hot dip galvanizingExpiredJan 28, 02Aug 03, 04[B05C]
6761053 Plate reduction press apparatus and methodsExpiredMar 24, 03Jul 13, 04[B21B]
2004/0118,489 Dual phase hot rolled steel sheet having excellent formability and stretch flangeabilityAbandonedDec 18, 02Jun 24, 04[C21D]
2004/0101,698 Resin film laminated metal sheet for can and method for fabricating the sameAbandonedNov 20, 03May 27, 04[C23C]
2004/0074,573 High strength hot rolled steel sheet and method for manufacturing the sameAbandonedOct 14, 03Apr 22, 04[C21D]
6722174 Device and method for manufacturing hot-rolled sheet steel and device and method for sheet thickness pressing used for the device and methodExpiredFeb 26, 01Apr 20, 04[B21B]
2004/0047,756 Cold rolled and galvanized or galvannealed dual phase high strength steel and method of its productionAbandonedSep 06, 02Mar 11, 04[C22C]
2004/0033,173 Apparatus for decomposing halogenated hydrocarbon gasAbandonedAug 15, 03Feb 19, 04[B01D]
2004/0020,570 High strength cold rolled steel sheet and method for manufacturing the sameAbandonedJul 29, 03Feb 05, 04[C21D]
2004/0023,180 Alumina honeycomb structure, method for manufacture of the same, and heat-storing honeycomb structure using the sameAbandonedJun 18, 03Feb 05, 04[F23D]
6677053 Surface-treated steel sheet and production method thereforExpiredDec 17, 01Jan 13, 04[C23C, B32B]
6660052 Method for blowing synthetic resins as a fuel into a furnaceExpiredJan 09, 03Dec 09, 03[C10L, F23B]
2003/0192,360 Plate reduction press apparatus and methodsAbandonedMar 24, 03Oct 16, 03[B21B]
2003/0177,864 Method for manufacturing hot metal desulfurizing agent and apparatus for sameAbandonedDec 12, 02Sep 25, 03[C21C, C21B]

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