Daido Tokushuko Kabushiki Kaisha

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22C ALLOYS 2745
 
  
 
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 639
 
  
 
B22D CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES 544
 
  
 
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
 
  
 
C21C PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL 414
 
  
 
H01F MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES 480
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM3154
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 3359
 
  
 
B21D WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING 254
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 250

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9304176 Thin-film magnetic sensor including a GMR film and method for manufacturing the sameDec 28, 10Apr 05, 16[H01L, B82Y, G11B, G01R]
8900511 High-strength nonmagnetic stainless steel, and high-strength nonmagnetic stainless steel part and process for producing the sameMay 02, 08Dec 02, 14[C21D, E21B, C22C]
8894778 Carburized and high-frequency hardened part having high strengthApr 08, 08Nov 25, 14[C23C, C21D, C22C]
8748737 Concentrator photovoltaic deviceMay 18, 11Jun 10, 14[H01L]
8696836 Nonmagnetic high-hardness alloyMar 02, 06Apr 15, 14[C22F, C22C]
8512486 Beta-type titanium alloy and product thereofApr 03, 07Aug 20, 13[C22C]
8491838 Low thermal expansion Ni-base superalloyJun 12, 07Jul 23, 13[C22C]
8133632 Metal component for fuel cell and method of manufacturing the same, austenitic stainless steel for polymer electrolyte fuel cell and metal component for fuel cell using the same, polymer electrolyte fuel cell material and method of manufacturing the same, corrosion-resistant conductive component and method of manufacturing the same, and fuel cellOct 05, 09Mar 13, 12[H01M, B32B]
8012272 Tool steels and manufacturing method thereofOct 30, 08Sep 06, 11[C21D, C22C]
7914732 Ferritic stainless steel cast iron, cast part using the ferritic stainless steel cast iron, and process for producing the cast partFeb 23, 07Mar 29, 11[C22C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0236,247 HEAT RESISTANT STEEL FOR EXHAUST VALVEAbandonedMar 24, 11Sep 29, 11[C22C]
8002906 Rare earth magnet and production process thereofExpiredJun 30, 09Aug 23, 11[H01F]
2010/0294,978 METAL/INSULATOR NANOGRANULAR MATERIAL AND THIN-FILM MAGNETIC SENSORAbandonedMay 18, 10Nov 25, 10[G01R, H01F]
2010/0272,593 HIGH CORROSION-RESISTANT, HIGH-STRENGTH AND NON-MAGNETIC STAINLESS STEEL, HIGH CORROSION-RESISTANT, HIGH-STRENGTH AND NON-MAGNETIC STAINLESS STEEL PRODUCT AND METHOD FOR PRODUCING THE SAMEAbandonedApr 23, 10Oct 28, 10[B21D, C22C]
7800474 Bond magnet for direct current reactor and direct current reactorExpiredFeb 18, 09Sep 21, 10[H01F]
2010/0139,813 TWO-WAY SHAPE-RECOVERY ALLOYAbandonedDec 03, 09Jun 10, 10[C22C]
7722801 Vacuum carburizing apparatusExpiredAug 29, 07May 25, 10[C23C]
2010/0068,669 CONTINUOUS HEAT TREATMENT FURNACEAbandonedSep 15, 09Mar 18, 10[F27D]
2009/0136,824 Metallic bipolar plate for fuel cells and method for manufacturing the sameAbandonedNov 26, 08May 28, 09[H01M]
7508287 Band-pass filterExpiredSep 13, 06Mar 24, 09[H01P]
2009/0074,606 Low density titanium alloy, golf club head, and process for prouducing low density titanium alloy partAbandonedSep 12, 08Mar 19, 09[C22C]
7494618 Alloy tool steelExpiredDec 07, 04Feb 24, 09[C22C]
2008/0264,526 Hot working die steel for die-castingAbandonedApr 27, 07Oct 30, 08[C22C]
2008/0240,970 Austenitic free-cutting stainless steelAbandonedMar 31, 08Oct 02, 08[C21D, C22C]
7381369 Free cutting alloyExpiredMay 18, 04Jun 03, 08[C22C]
2008/0089,804 Martensitic free cutting stainless steelAbandonedOct 02, 07Apr 17, 08[C22C]
2008/0038,619 Metallic bipolar plate for fuel cells,and fuel cell comprising the sameAbandonedAug 06, 07Feb 14, 08[H01M]
2007/0295,384 Light converging-type solar photovoltaic apparatusAbandonedJun 15, 07Dec 27, 07[H01L]
7297214 Free cutting alloyExpiredMay 18, 04Nov 20, 07[C22C]
2007/0221,298 Ni-based super alloyAbandonedMar 20, 07Sep 27, 07[C22C]

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