HITACHI POWDERED METALS CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 3620
 
  
 
C22C ALLOYS 2349
 
  
 
F16C SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OF CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS 961
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 876
 
  
 
H02K DYNAMO-ELECTRIC MACHINES 7100
 
  
 
B30B PRESSES IN GENERAL; PRESSES NOT OTHERWISE PROVIDED FOR 418
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 353
 
  
 
B29C SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING 3122
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM3154
 
  
 
C03C CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS357

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9646756 Powder magnetic core and method for producing the sameMar 25, 11May 09, 17[B22F, H01F]
9637811 Iron-based sintered sliding member and production method thereforOct 01, 12May 02, 17[F16C, B22F, C22C]
9566639 Production method for sintered memberSep 23, 11Feb 14, 17[B21K, B21J, B22F, C21D, C22C]
9492867 Forming die assembly for microcomponentsOct 24, 11Nov 15, 16[B22F, B30B]
9441286 Oil-impregnated sintered bearing and production method thereforOct 19, 12Sep 13, 16[F16C, B22F, C22C]
9340857 Sintered alloy and production method thereforMar 11, 13May 17, 16[B22F, C22C]
9260772 Hard phase forming alloy powder, wear resistant sintered alloy, and production method for wear resistant sintered alloyDec 06, 12Feb 16, 16[C22C]
9246076 Thermoelectric conversion module and production method thereforJan 22, 14Jan 26, 16[H01L]
9212572 Sintered valve guide and production method thereforDec 14, 10Dec 15, 15[F01L, C22C]
9174278 Substantially cylindrical powder compact and die assembly for compacting powderMay 12, 10Nov 03, 15[B22F, B30B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0093,131 SINTERED COMPOSITE SLIDING PART AND PRODUCTION METHOD THEREFORAbandonedDec 06, 12Apr 18, 13[B22F]
2013/0057,371 COATED METAL POWDER, POWDER MAGNETIC CORE AND METHOD FOR PRODUCING SAMEAbandonedApr 08, 11Mar 07, 13[B05D, B22F, H01F]
2013/0058,825 SINTERED ALLOY AND MANUFACTURING METHOD THEREOFAbandonedAug 13, 12Mar 07, 13[B22F, B32B]
2013/0056,674 POWDER MAGNETIC CORE AND PROCESS FOR PRODUCTION THEREOFAbandonedApr 08, 11Mar 07, 13[B82Y, B22F, H01F]
8337723 Electroconductive material and positive electrode material for lithium ion secondary battery using the sameExpiredJul 01, 10Dec 25, 12[C03C, C04B, H01B]
2012/0160,293 THERMOELECTRIC CONVERSION MODULE AND PRODUCTION METHOD THEREFORAbandonedDec 16, 11Jun 28, 12[H01L]
2010/0080,725 Production method for sintered valve guideAbandonedSep 09, 09Apr 01, 10[B22F]
7666348 Production method of electrode for cold cathode fluorescent lampExpiredMay 08, 06Feb 23, 10[B22F]
7651659 Manufacturing method of sinter forged aluminum parts with high strengthExpiredOct 01, 04Jan 26, 10[B22F]
7649298 Claw teeth type electric rotary machine and manufacturing method for statorsExpiredJul 24, 07Jan 19, 10[H02K]
2010/0008,812 Hard phase forming alloy powder, wear resistant sintered alloy, and production method for wear resistant sintered alloyAbandonedJun 30, 09Jan 14, 10[B22F, C22C]
2009/0297,077 Fluid dynamic pressure bearing and production method for the sameAbandonedJul 16, 09Dec 03, 09[F16C]
7626301 Electric rotating machine having permanent magnets and method of manufacturing teeth portions of the stator iron coreExpiredSep 22, 05Dec 01, 09[H02K]
2009/0291,012 Production method for sintered partAbandonedFeb 10, 09Nov 26, 09[B22F]
2009/0269,235 Production method for sintered machine componentsAbandonedApr 21, 09Oct 29, 09[B22F]
7559697 Dynamic bearing unitExpiredDec 22, 06Jul 14, 09[F16C]
2009/0092,848 Sintered composite sliding part and production method thereforAbandonedOct 01, 08Apr 09, 09[B22F, B32B]
7399532 Corrosive resistant metal material covered with conductive substanceExpiredMar 14, 03Jul 15, 08[B32B]
2008/0038,122 ELECTRIC AXIAL FLOW PUMPAbandonedJul 20, 07Feb 14, 08[F04D]
2008/0023,056 Thermoelectric Conversion System and of Increasing Efficiency of Thermoelectric Conversion SystemAbandonedMay 19, 05Jan 31, 08[H01L]

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