DOWA HOLDINGS CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01L SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR 6356
 
  
 
H01M PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY 5149
 
  
 
B01J CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS 3106
 
  
 
B22F WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER 349
 
  
 
C01B NON-METALLIC ELEMENTS; COMPOUNDS THEREOF376
 
  
 
C02F TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE 352
 
  
 
G02F DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THE DEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY, COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g. SWITCHING, GATING, MODULATING OR DEMODULATING; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS 3130
 
  
 
G09G ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION 3148
 
  
 
B82Y SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; MEASUREMENT OR ANALYSIS OF NANO-STRUCTURES; MANUFACTURE  OR TREATMENT OF NANO-STRUCTURES350
 
  
 
C22B PRODUCTION OR REFINING OF METALS 226

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9761868 Lithium—transition metal oxide powder and method of producing the same, positive electrode active material for lithium ion battery, and lithium ion secondary batterySep 21, 11Sep 12, 17[B82Y, H01M, C01G]
9761907 Positive-electrode active-material powder and manufacturing method thereforMay 06, 14Sep 12, 17[C01B, H01M]
9679670 Aggregate of radioactive material removing particles and method of producing the same, and method of removing contaminantMay 19, 14Jun 13, 17[G21F, B01J, C02F]
9673465 Catalyst, method for producing catalyst, and method for producing hydrogen-containing gas using catalyst, and hydrogen generating device, fuel cell system, and silicon-supported CeZr-based oxideMar 07, 13Jun 06, 17[C01B, H01M, B01J]
9634327 Negative electrode active material for lithium ion secondary battery, method for producing the same, negative electrode, and batteryJul 08, 15Apr 25, 17[C04B, H01M]
9324556 Field electron emission film, field electron emission device, light emission device, and method for producing themAug 12, 13Apr 26, 16[H01J]
9132514 Solder powder and method of producing solder powderNov 18, 10Sep 15, 15[B23K, B22F, C22C]
8888891 Metal recovery method using protonemata of moss plantsJun 01, 10Nov 18, 14[C22B, A01G, C02F]
8878189 Group III nitride semiconductor growth substrate, group III nitride semiconductor epitaxial substrate, group III nitride semiconductor element and group III nitride semiconductor free-standing substrate, and method of producing the sameMar 25, 10Nov 04, 14[H01L]
8858909 Carbon nanotube and method for producing sameMay 28, 10Oct 14, 14[C01B, B82Y, H01B, B01J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0137,246 METHOD OF PRODUCING GROUP III NITRIDE SEMICONDUCTOR GROWTH SUBSTRATEAbandonedJan 25, 13May 30, 13[H01L]
2012/0235,098 CHALCOGEN COMPOUND POWDER, CHALCOGEN COMPOUND PASTE, PROCESS FOR PRODUCING CHALCOGEN COMPOUND POWDER, AND PROCESS FOR PRODUCING CHALCOGEN COMPOUND PASTEAbandonedDec 07, 10Sep 20, 12[B82Y, H01B, B32B]
2012/0231,169 CHALCOGEN COMPOUND POWDER, CHALCOGEN COMPOUND PASTE, PROCESS FOR PRODUCING CHALCOGEN COMPOUND POWDER, PROCESS FOR PRODUCING CHALCOGEN COMPOUND PASTE, AND PROCESS FOR PRODUCING THIN FILM OF CHALCOGEN COMPOUNDAbandonedDec 07, 10Sep 13, 12[C09K, B02C, B05D, H01B, G02B, B32B]
7895957 Heat exchanger tube, method of manufacturing heat exchanger tube, and fluidized-bed furnaceExpiredDec 27, 06Mar 01, 11[F23G, F23M, F28F]
2009/0253,086 Burner ArrangementAbandonedNov 24, 06Oct 08, 09[F23N]
7481698 Sintered rare earth magnetic alloy wafer surface grinding machineExpiredAug 17, 07Jan 27, 09[B24B]
2008/0261,378 Method for Growth of Gan Single Crystal, Method for Preparation of Gan Substrate, Process for Producing Gan-Based Element, and Gan-Based ElementAbandonedMar 31, 06Oct 23, 08[H01L]
7273405 Sintered rare earth magnetic alloy wafer and wafer surface growing machineExpiredSep 16, 05Sep 25, 07[H01F]
7256476 Notched compound semiconductor waferExpiredNov 07, 05Aug 14, 07[H01L]
7256477 Notched compound semiconductor waferExpiredNov 07, 05Aug 14, 07[H01L]
7256478 Notched compound semiconductor waferExpiredNov 07, 05Aug 14, 07[H01L]
2006/0292,383 Metal-coated substrate and manufacturing method of the sameAbandonedNov 25, 04Dec 28, 06[C23C, B05D, B32B]
2006/0233,659 HYDROGEN STORAGE METAL ALLOY AND PRODUCTION THEREOFAbandonedJun 23, 06Oct 19, 06[C22C]
2006/0093,838 Metal coated substrate and manufacturing method of the sameAbandonedSep 21, 05May 04, 06[B32B]
6994756 Method of producing sintered rare earth magnetic alloy waferExpiredNov 22, 02Feb 07, 06[H01F]
2005/0079,090 Hydrogen storage metal alloy and production thereofAbandonedOct 06, 04Apr 14, 05[C22C]
2005/0061,423 Manufacturing method and manufacturing device of metal clad filmAbandonedAug 11, 04Mar 24, 05[B44C, B32B]
6383962 Aluminum nitride sintered productExpiredMar 16, 00May 07, 02[C04B]

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