NIPPON PISTON RING CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F16J PISTONS; CYLINDERS; PRESSURE VESSELS IN GENERAL; SEALINGS2426
 
  
 
C22C ALLOYS 1062
 
  
 
F01L CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES 946
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 844
 
  
 
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 794
 
  
 
B23P OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS 551
 
  
 
F02F CYLINDERS, PISTONS, OR CASINGS FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES 530
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM4153
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 3104
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 247

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0281,269 MEDICAL INSTRUMENTMar 24, 17Oct 05, 17[A61B]
2017/0283,935 COATING FILM, MANUFACTURING METHOD FOR SAME, AND PVD DEVICESep 17, 14Oct 05, 17[C23C, B82Y]
2017/0227,126 COMBINED OIL RINGJul 22, 15Aug 10, 17[F16J]
2016/0003,356 HARD CARBON COATING FILMFeb 27, 14Jan 07, 16[C23C, F16J]
2015/0369,090 HIGHLY WEAR-RESISTANT VALVE SEAT FOR USE IN INTERNAL COMBUSTION ENGINE AND MANUFACTURING METHOD THEREFORJan 31, 14Dec 24, 15[F01L, B22F, C22C]
2015/0214,797 THREE-DIMENSIONAL AXIAL GAP TYPE ROTATING ELECTRIC MACHINEJan 22, 15Jul 30, 15[H02K]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9882442 Rotating electric machine including rotor arranged with intermediation of air gapSep 29, 14Jan 30, 18[H02K]
9863534 Hard carbon coating filmFeb 27, 14Jan 09, 18[C23C, F16J]
9803268 Iron-base sintered alloy material for valve seat insert and method for manufacturing the sameMar 31, 15Oct 31, 17[B23P, F01L, B22F, C22C]
9752214 Titanium alloyJan 31, 12Sep 05, 17[C22F, A61L, C22C]
9528606 Combined oil ringAug 28, 13Dec 27, 16[F16J]
9506138 Piston ringApr 23, 15Nov 29, 16[C23C, B23P, F16J]
9464717 Piston ringJan 28, 11Oct 11, 16[F16J]
8956565 Flake graphite cast iron and production method thereofJun 25, 08Feb 17, 15[C22C]
8952589 Rotating electrical machineDec 19, 12Feb 10, 15[H02K]
8820750 Internal combustion engine oil ringMar 31, 11Sep 02, 14[B23P, F16J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2015/0108,856 ROTATING ELECTRIC MACHINEAbandonedOct 20, 14Apr 23, 15[H02K]
2014/0132,092 ROTATING ELECTRICAL MACHINEAbandonedNov 11, 13May 15, 14[H02K]
2014/0117,790 ROTATING ELECTRICAL MACHINEAbandonedOct 30, 13May 01, 14[H02K]
2014/0021,822 ROTATING ELECTRICAL MACHINEAbandonedJul 18, 13Jan 23, 14[H02K]
2013/0328,274 PISTON RINGAbandonedFeb 27, 12Dec 12, 13[F16J]
2013/0313,838 LINEAR MOTOR, LINEAR DYNAMO, RECIPROCATION-TYPE COMPRESSOR DRIVING SYSTEM THAT IS POWERED BY LINEAR MOTOR, AND CHARGE SYSTEM THAT USES LINEAR DYNAMOAbandonedMay 24, 13Nov 28, 13[H02K, F03G]
2013/0293,037 ROTATING ELECTRIC MACHINEAbandonedApr 12, 13Nov 07, 13[H02K]
2013/0234,400 PISTON RINGAbandonedNov 15, 11Sep 12, 13[F16J]
2013/0187,485 ROTARING ELECTRICAL MACHINEAbandonedDec 05, 12Jul 25, 13[H02K]
2013/0049,305 INTERNAL COMBUSTION ENGINE OIL RINGAbandonedApr 19, 11Feb 28, 13[F16J]
2012/0301,345 PRODUCTION METHOD OF FLAKE GRAPHITE CAST IRONAbandonedAug 02, 12Nov 29, 12[C21C, C22C]
2012/0205,876 PISTON RINGAbandonedNov 30, 09Aug 16, 12[F16J]
2012/0061,920 OIL RING MECHANISM OF A PISTONAbandonedMar 30, 10Mar 15, 12[F16J]
2010/0319,647 COMBINATION STRUCTURE OF PISTON RING AND CYLINDER LINER FOR INTERNAL COMBUSTION ENGINEAbandonedNov 27, 08Dec 23, 10[F02F]
2010/0253,006 STEEL PRODUCTS FOR PISTON RINGS AND PISTON RINGSAbandonedNov 28, 08Oct 07, 10[F02F, F16J, C22C]
2010/0224,146 METHOD FOR MANUFACTURING A SHAFT MEMBER HAVING A SINTERED PART BONDED THERETO AND A CAMSHAFT FOR AN INTERNAL COMBUSTION ENGINEAbandonedDec 27, 06Sep 09, 10[F01L, B22F]
2009/0026,711 COMPRESSION PISTON RINGAbandonedJul 21, 08Jan 29, 09[F02F]
2008/0276,753 Method of Manufacturing Cam Shaft, Cam Shaft, and Cam Lobe Material Used in the SameAbandonedOct 28, 04Nov 13, 08[B23P, F01L, F16H, C21D]
2007/0261,658 Piston For Internal-Combustion Engine And Combination Of Piston And Piston Ring For Internal-Combustion EngineAbandonedNov 22, 05Nov 15, 07[F02F]
7273508 Iron-based sintered alloy material for valve seatExpiredMar 03, 05Sep 25, 07[C22C]

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