DOWA MINING CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
C22C ALLOYS 1161
 
  
 
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 992
 
  
 
C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS 829
 
  
 
B32B LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM7150
 
  
 
C01G COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F 732
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 7147
 
  
 
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
 
  
 
G11B INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER 6132
 
  
 
H01B CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES 668
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 547

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8992701 Silver powder and method for producing sameMay 10, 12Mar 31, 15[H01B, B22F, C22C, H01G, H05K]
7131483 Apparatus, mold, and method for manufacturing metal-ceramic composite memberSep 11, 03Nov 07, 06[B22D]
7128844 Metal/ceramic circuit board and method for producing sameMay 27, 04Oct 31, 06[H01L]
7122243 Metal/ceramic bonding substrate and method for producing sameOct 19, 04Oct 17, 06[B32B]
7094493 Hydrogen storage metal alloy, method for absorption and release of hydrogen using the said alloy and hydrogen fuel battery using the said methodNov 18, 04Aug 22, 06[H01M]
7090488 Heat treatment furnaceMar 27, 02Aug 15, 06[F27B]
7074281 Magnetic powder for magnetic recordingMar 05, 03Jul 11, 06[H01F]
7048866 Metal/ceramic bonding article and method for producing sameJun 03, 03May 23, 06[C23F]
7024916 Vacuum heat treatment furnace and method of and apparatus for measuring carbon concentration in atmosphere having reduced pressure.Jan 16, 04Apr 11, 06[G01N]
7008549 Circuit board, process for producing the same and a power module employing the sameJan 29, 04Mar 07, 06[H01B]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2008/0230,515 Power module member manufactured by wet treatment, and wet treatment method and wet treatment equipment thereofAbandonedMay 19, 08Sep 25, 08[C23F]
7392812 Substrate processing apparatus and substrate transporting device mounted theretoExpiredOct 17, 03Jul 01, 08[B08B]
7159757 Metal/ceramic bonding article and method for producing sameExpiredSep 23, 03Jan 09, 07[B23K]
7073703 Aluminum/ceramic bonding substrate and method for producing sameExpiredSep 29, 03Jul 11, 06[B23K]
7012679 Inspection method and inspection system of surface of articleExpiredJan 17, 03Mar 14, 06[G01N]
6935554 Metal/ceramic bonding article and method for producing sameExpiredSep 25, 02Aug 30, 05[B23K, H01C]
2005/0138,799 Method of manufacturing a metal-ceramic circuit boardAbandonedFeb 25, 05Jun 30, 05[B32B, H05K]
6858151 Metal/ceramic bonding article and method for producing sameExpiredSep 25, 02Feb 22, 05[H01L]
6835230 Method for leaching zinc concentrateExpiredJan 28, 02Dec 28, 04[C22B]
6832606 Wire saw and cutting method thereofExpiredOct 25, 02Dec 21, 04[B28D]
6809042 Oxide superconductor thick film and method for manufacturing the sameExpiredAug 26, 02Oct 26, 04[H01L]
2004/0200,730 Hydrometallurgical copper recovery processAbandonedApr 14, 03Oct 14, 04[C22B, C25B]
2004/0166,016 High-purity metalAbandonedOct 14, 03Aug 26, 04[C22C]
6780520 Metal/ceramic bonding article and method for producing sameExpiredJan 27, 03Aug 24, 04[B32B]
2004/0149,689 Method for producing metal/ceramic bonding substrateAbandonedDec 03, 02Aug 05, 04[B44C]
6737173 Pretreating method before plating and composites having a plated coatExpiredMar 27, 03May 18, 04[C23C, B05D, B32B]
2004/0069,528 Process for producing ceramic circuit boardsAbandonedOct 09, 02Apr 15, 04[H05K]
2004/0065,987 Apparatus for leaching zinc concentratesAbandonedOct 07, 03Apr 08, 04[C22B]
6696037 Method of recovering sulfur from minerals and other sulfur-containing compoundsExpiredOct 02, 00Feb 24, 04[C22B, C01B, C01G]
6627149 High-purity silver wires for use in recording, acoustic or image transmission applicationsExpiredJan 11, 99Sep 30, 03[C22C]

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