DOWA METALTECH CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22C ALLOYS 1854
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM15142
 
  
 
C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS 1126
 
  
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 11145
 
  
 
C25D PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING 1041
 
  
 
H01R ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS 10123
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 8354
 
  
 
H01B CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES 767
 
  
 
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
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 490

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0088,965 TIN-PLATED PRODUCT AND METHOD FOR PRODUCING SAMEFeb 25, 15Mar 30, 17[C25D, C25F, B32B]
2016/0201,179 COPPER ALLOY SHEET MATERIAL AND METHOD FOR PRODUCING SAME, AND CURRENT-CARRYING COMPONENTAug 26, 14Jul 14, 16[C22F, C22C]
2014/0083,671 HEAT RADIATING PLATE AND METHOD FOR PRODUCING SAMESep 25, 13Mar 27, 14[F28F]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9905951 Silver-plated productMar 01, 13Feb 27, 18[C25D, H01R, H01H, B32B]
9831157 Method of attaching an electronic part to a copper plate having a surface roughnessSep 02, 14Nov 28, 17[H01L, H05K]
9713253 Metal/ceramic bonding substrate and method for producing sameMar 29, 11Jul 18, 17[H01L, B22D, B21D, H05K]
9698554 Female terminal fabricating methodApr 23, 15Jul 04, 17[H01R, H01S, C22C]
9683307 Partial plating device and partial plating methodOct 18, 12Jun 20, 17[C25D]
9646739 Method for producing silver-plated productSep 20, 12May 09, 17[C23C, C25D, H01B, H01R, H01H, C22C]
9614300 Electrical connector and manufacturing method thereofJul 09, 14Apr 04, 17[H01R]
9534307 Silver-plated product and method for producing sameSep 17, 13Jan 03, 17[C25D, H01R, C22F, H01H, B32B, C22C]
9493859 Manufacturing method of copper alloy sheetOct 30, 14Nov 15, 16[H01B, C22F, C22C]
9474146 Manufacturing method of radiator-integrated substrate and radiator-integrated substrateMar 13, 13Oct 18, 16[H01L, C04B, B23K, H05K]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2009/0229,987 METHOD FOR PRODUCING COMPOSITE PLATED PRODUCTAbandonedSep 12, 06Sep 17, 09[C25D]
2008/0190,523 Cu-Ni-Si-based copper alloy sheet material and method of manufacturing sameAbandonedJul 13, 07Aug 14, 08[C22F, C22C]
7368665 Circuit board and a power module employing the sameExpiredNov 09, 05May 06, 08[H05K]
2007/0227,697 Heat radiatorAbandonedMar 28, 07Oct 04, 07[H05K]
2006/0016,528 Copper-based alloy and method of manufacturing sameAbandonedJun 30, 05Jan 26, 06[C22F, C22C]
2005/0217,823 Aluminum bonding member and method for producing sameAbandonedMar 31, 05Oct 06, 05[H05K]
2005/0196,634 Metal member and electric contact using sameAbandonedMar 03, 05Sep 08, 05[B32B]
2005/0175,773 Metal/ceramic bonding member and method for producing sameAbandonedJan 28, 05Aug 11, 05[B05D]
2005/0039,827 Copper alloy having excellent corrosion cracking resistance and dezincing resistance, and method for producing sameAbandonedAug 20, 03Feb 24, 05[C22C]
2004/0261,913 Copper alloyAbandonedApr 23, 04Dec 30, 04[C22C]

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