ELECTRIC POWER DEVELOPMENT CO., LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
F23N REGULATING OR CONTROLLING COMBUSTION 516
 
  
 
F23B METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL 47
 
  
 
F23J REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 314
 
  
 
B01D SEPARATION 2132
 
  
 
C12N MICRO-ORGANISMS OR ENZYMES; COMPOSITIONS THEREOF 2165
 
  
 
C12P FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE 297
 
  
 
F23C METHODS OR APPARATUS FOR COMBUSTION USING FLUENT FUEL 219
 
  
 
F23D BURNERS 230
 
  
 
F27D DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE 223
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 292

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2017/0082,676 SINGULARITY LOCATORDec 05, 16Mar 23, 17[G01R]
2016/0369,216 ALGAE CULTURING APPARATUS AND ALGAE CULTURING SYSTEMDec 09, 14Dec 22, 16[C12M]

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9810425 Pulverized coal burner for oxyfuel combustion boilerMar 06, 08Nov 07, 17[F23L, F22B, F23D]
9631869 Powder supply device and powder supply methodSep 04, 12Apr 25, 17[B65G, F27D, G01G]
9429315 Method and apparatus of controlling oxygen supply in oxyfuel combustion boilerMar 06, 08Aug 30, 16[F23L, F23N, F23C, F22B]
9243961 In-furnace temperature measurement deviceMar 02, 12Jan 26, 16[G01K]
9239164 Slag monitoring device for coal gasifier and coal gasifierSep 17, 10Jan 19, 16[F23J, C10J, F23N, F27D]
8997665 Slag-melting burner apparatusOct 05, 09Apr 07, 15[F23J, F27D, F23B, F23D]
8927285 , process for production of oil by culture of the micro-alga, and oil collected from the micro-algaMar 10, 10Jan 06, 15[C11B, C12R, C12P, C12N]
8662884 Method and apparatus of controlling oxygen supply for boilerMar 06, 08Mar 04, 14[F23N]
8637784 Method for improving residual stress in tubular bodyJan 11, 08Jan 28, 14[B23K]
8601960 Method and apparatus of controlling exhaust gas in oxyfuel combustion boilerMar 06, 08Dec 10, 13[F23J, F23L, F23B, F23C]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2016/0209,458 SINGULARITY LOCATORAbandonedSep 03, 14Jul 21, 16[G01R]
8541215 Microorganisms, selenium acid compound-reducing agent, method for reducing and method for removing selenium acid compound, and process for producing metallic seleniumExpiredJun 17, 09Sep 24, 13[C07H, C12P, C12N, C02F]
2011/0318,697 GROUND FLAREAbandonedDec 18, 09Dec 29, 11[F23G]
2011/0104,624 METHOD AND APPARATUS OF CONTROLLING COMBUSTION IN OXYFUEL COMBUSTION BOILERAbandonedMar 06, 08May 05, 11[F23N, F22D]
2010/0059,113 DYE-SENSITIZED SOLAR CELLAbandonedOct 26, 07Mar 11, 10[H01L]
2009/0297,761 FLEXIBLE LAMINATED WOOD MATERIAL AND PROCESS FOR PRODUCING THE SAMEAbandonedJan 16, 08Dec 03, 09[B27D, B32B]
2009/0288,705 PHOTOVOLTAIC POWER GENERATION AND SOLAR HEAT COLLECTORAbandonedDec 11, 07Nov 26, 09[H01L]
2009/0249,691 Apparatus and Method for Gasifying Solid FuelAbandonedFeb 01, 06Oct 08, 09[C10J]
2009/0031,933 DISPOSAL METHOD AND EQUIPMENT FOR EXHAUST GAS FROM COMBUSTION SYSTEMAbandonedNov 28, 06Feb 05, 09[F25J, F23J, F23L, F23C, B01D]
2008/0307,704 Coal gasification plant and method for operating the sameAbandonedJun 12, 07Dec 18, 08[C10J]
7113653 Registration correction method in image processing, and vegetation state display method using the registration correction methodExpiredJan 28, 03Sep 26, 06[G06K]
5737162 Circuit breaking deviceExpiredAug 06, 96Apr 07, 98[H02H]
5717583 Power converter control apparatus for controlling commutation of switching devices under transient conditionsExpiredAug 03, 95Feb 10, 98[H02M]
5361728 Pressurized fluidized bed combustion boiler systemExpiredSep 14, 93Nov 08, 94[F22B]
4770864 Process for removing NH.sub.3 in an SO.sub.2 -containing gasExpiredJun 09, 87Sep 13, 88[C01C]
4712742 Preparation of deashed high solid concentration coal-water slurryExpiredNov 15, 85Dec 15, 87[B02C]
4706891 Process for producing high concentration coal-water slurryExpiredAug 07, 86Nov 17, 87[B02C]
4702745 Process for dewatering high moisture, porous organic solidExpiredMay 01, 86Oct 27, 87[C10L, F26B]
4593859 Preparation of deashed high solid concentration coal-water slurryExpiredMay 17, 84Jun 10, 86[B02C]
4500041 Process for producing high-concentration slurry of coalExpiredDec 03, 82Feb 19, 85[B02C]

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