NITTAN VALVE CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 4626
 
  
 
B21K MAKING FORGED OR PRESSED PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS, WHEELS 1610
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING964
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 749
 
  
 
C22C ALLOYS 666
 
  
 
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 596
 
  
 
B23K SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM 489
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM4153
 
  
 
B21J FORGING; HAMMERING; PRESSING; RIVETING; FORGE FURNACES 317
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 250

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0348,546 POPPET VALVEFeb 12, 14Dec 01, 16[F01L]
2016/0285,392 INTERNAL COMBUSTION ENGINE WITH POWER-GENERATING MEMBEROct 29, 14Sep 29, 16[H02N, F01L, F02B, F03G]
2016/0276,960 INTERNAL COMBUSTION ENGINE WITH POWER-GENERATING MEMBERNov 05, 13Sep 22, 16[H02N, F01L, F16C, F02B, F03G]
2016/0053,641 HOLLOW POPPET VALVEApr 11, 13Feb 25, 16[F01L]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9920663 Hollow poppet valveApr 11, 13Mar 20, 18[F01L]
9840948 Method for supplying inert gas into poppet valve intermediate and apparatus for supplying inert gas into poppet valve intermediateOct 28, 15Dec 12, 17[F16K, B23P, B21K, F01L]
9803518 Hydraulic lash adjusterJan 06, 15Oct 31, 17[F01L]
9790822 Hollow poppet valveFeb 10, 14Oct 17, 17[F16K, B23P, B21K, F01L]
9751164 Method of manufacturing a hollow poppet valveNov 21, 13Sep 05, 17[B23P, B21K, F01L]
9739181 Hydraulic lash adjusterDec 09, 14Aug 22, 17[F01L]
9689506 Hollow poppet valveMar 26, 13Jun 27, 17[F16K, B23P, B21K, F01L, F01P]
9657384 DLC film coating and coated valve lifterMar 22, 13May 23, 17[C23C, F01L]
9657606 Direct-acting valve lifter of internal combustion engineFeb 25, 15May 23, 17[F01L]
9611953 Hollow poppet valveMar 14, 13Apr 04, 17[F16K, B23P, B21K, F01L]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2017/0072,457 BAR MATERIAL TRANSFER METHOD AND CONVEYORAbandonedNov 11, 16Mar 16, 17[B21K, B21J]
2016/0047,425 CLUTCH, CLUTCH FORMING PUNCH, AND METHOD OF MANUFACTURING CLUTCHAbandonedMar 29, 13Feb 18, 16[F16D]
2015/0247,428 VARIABLE PHASER FOR AUTOMOBILE ENGINEAbandonedOct 09, 12Sep 03, 15[F01L]
2014/0007,832 ROCKER ARM FOR VALVE CONTROL APPARATUSAbandonedOct 04, 11Jan 09, 14[F01L]
8613266 Cam shaft phase variable device in engine for automobileExpiredSep 05, 08Dec 24, 13[F01L]
8522736 Phase variable device for engineExpiredMar 31, 09Sep 03, 13[F01L]
8505508 Phase varying device for engineExpiredJun 05, 09Aug 13, 13[F01L]
8468991 Electromagnetic-clutch rotation stopping structureExpiredDec 22, 09Jun 25, 13[F01L]
2013/0125,846 VARIABLE CAM PHASER FOR AUTOMOBILE ENGINEAbandonedMay 18, 10May 23, 13[F01L]
8418665 Variable phase controller for automotive engineExpiredApr 23, 08Apr 16, 13[F01L]
8387577 Phase changing device for automobile engineExpiredFeb 24, 09Mar 05, 13[F01L]
8381694 Engine valve controllerExpiredFeb 27, 08Feb 26, 13[F01L]
8322319 Cam shaft phase variable device in engine for automobileExpiredApr 20, 11Dec 04, 12[F01L]
8286602 Phase variable device in car engineExpiredFeb 04, 08Oct 16, 12[F01L]
8151751 Phase varying apparatus for engineExpiredAug 03, 06Apr 10, 12[F01L]
2011/0297,114 PHASE VARYING APPARATUS FOR AUTOMOBILE ENGINEAbandonedFeb 23, 09Dec 08, 11[F01L]
8001938 Valve control apparatus for engineExpiredSep 29, 06Aug 23, 11[F01L]
7992531 Phase varying apparatus for engineExpiredDec 11, 06Aug 09, 11[F01L]
2010/0282,194 SEALED-TYPE LASH ADJUSTERAbandonedAug 28, 08Nov 11, 10[F01L]
2009/0266,314 COOLANT-CONTAINING HOLLOW POPPET VALVE AND PROCESS FOR PRODUCING THE SAMEAbandonedNov 15, 05Oct 29, 09[B21K, F01L]

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