NIPPON KOSHUHA STEEL CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22C ALLOYS 468
 
  
 
B21C MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL219
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 254
 
  
 
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 299
 
  
 
B23D PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR 128
 
  
 
B26D CUTTING; DETAILS COMMON TO MACHINES FOR SEVERING, e.g. BY CUTTING, PERFORATING, PUNCHING, STAMPING-OUT 136
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 1124
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM1156
 
  
 
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 144
 
  
 
C30B SINGLE-CRYSTAL GROWTH 155

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0327,933 HOT WORK TOOL STEELJan 06, 15Nov 16, 17[C22C]
2015/0247,225 WIRE FOR PISTON RINGSOct 03, 12Sep 03, 15[C21D, C22C, F16J]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9902093 Press-forming mold and method for manufacturing protective film for press-forming moldApr 03, 12Feb 27, 18[C23C, B29C, B21D]
9017830 Shearing die and method for manufacturing the sameJun 28, 11Apr 28, 15[C23C, B26D, B23P, B21D, B32B, B23D]
6060018 Cold tool steel featuring high size stability, wear-resistance and machinabilitySep 11, 98May 09, 00[C22C]
5628218 Flaw treatment method and apparatus for a wire-shaped metalSep 15, 94May 13, 97[B21C]
5582051 Automatic flaw-cutting method and apparatus for wire-shaped metalSep 14, 94Dec 10, 96[B21C]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2010/0132,429 COLD-WORK DIE STEEL AND DIES FOR COLD PRESSINGAbandonedJan 07, 09Jun 03, 10[B21J, B21D, C22C]
2010/0135,844 COLD-WORK DIE STEEL AND DIEAbandonedSep 18, 08Jun 03, 10[B21D, C22C]
2010/0074,792 COLD WORK DIE STEEL, DIE, AND METHOD FOR PRODUCTION OF COLD WORK DIE STEELAbandonedOct 16, 07Mar 25, 10[C21D, C22C]
5732512 Manhole opening structureExpiredMay 30, 96Mar 31, 98[E02D]
5458703 Tool steel production methodExpiredAug 24, 93Oct 17, 95[C21D]
4911885 High carbon chromium bearing steelExpiredMar 31, 89Mar 27, 90[C22C]
4312210 Warm forging method for cup-shaped piecesExpiredMar 14, 80Jan 26, 82[B21C]
4291600 Process and apparatus for cutting circumferential surface to remove rod surface flawsExpiredFeb 06, 79Sep 29, 81[B23B]

Top Inventors for This Owner

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