HOKKAIDO ELECTRIC POWER COMPANY, INCORPORATED

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B01D SEPARATION 2132
 
  
 
F23J REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 215
 
  
 
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 192
 
  
 
C10J PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES 120
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING172
 
  
 
F23B METHODS OR APPARATUS FOR COMBUSTION USING ONLY SOLID FUEL 110
 
  
 
F23D BURNERS 131
 
  
 
F23N REGULATING OR CONTROLLING COMBUSTION 120
 
  
 
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 124

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
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]
8637784 Method for improving residual stress in tubular bodyJan 11, 08Jan 28, 14[B23K]
7871586 Mercury removal system and methodJun 09, 06Jan 18, 11[B01D]
7780143 Gate valveNov 29, 07Aug 24, 10[F16K]
6770119 Mercury removal method and systemSep 04, 02Aug 03, 04[B01D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2011/0318,697 GROUND FLAREAbandonedDec 18, 09Dec 29, 11[F23G]
2008/0307,704 Coal gasification plant and method for operating the sameAbandonedJun 12, 07Dec 18, 08[C10J]
6602982 Process for the preparation of regular glycopeptidesExpiredJan 30, 01Aug 05, 03[C07K]
6512109 Processes for producing saccharide derivatives using solid ultrastrong acidExpiredJan 30, 01Jan 28, 03[C07H, C08B]
6228336 Dust collecting methodExpiredAug 13, 99May 08, 01[C01B, B01J, B01D]
5560894 Process for treatment of exhaust gasExpiredDec 08, 94Oct 01, 96[C01B, B01J]
5037796 Process for producing hydrated and cured product of lime-gypsum-coal ash mixtureExpiredOct 10, 89Aug 06, 91[B01J]
4883185 Suspension type transporter for a bolt drawing machine and positioning controller thereforExpiredNov 02, 87Nov 28, 89[B23K]
4629721 Process for preparing desulfurizing and denitrating agentsExpiredMar 12, 86Dec 16, 86[B01J]

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