EBARA DENSAN LTD.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS 285
 
  
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 1119

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
7233082 Interconnecting power generation systemDec 09, 03Jun 19, 07[H02J]
7061211 Gas turbine generating apparatusMar 15, 05Jun 13, 06[H02P]
6888263 Gas turbine generatorMay 23, 02May 03, 05[H02P]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2007/0273,342 ELECTRIC POWER SUPPLY APPARATUS AND METHOD OF SYNCHRONOUSLY OPERATING POWER CONVERTERAbandonedMay 24, 07Nov 29, 07[H02J, G05F]
7189336 Etchant, method for roughening copper surface and method for producing printed wiring boardExpiredMar 21, 03Mar 13, 07[C23F]
2007/0007,969 Circuit and system for detecting dc component in inverter device for grid-connectionAbandonedAug 26, 04Jan 11, 07[G01R]
2006/0214,509 Power supply including system interconnection inverterAbandonedMay 07, 04Sep 28, 06[H02J]
6902626 Method for roughening copper surfaceExpiredOct 29, 03Jun 07, 05[C23G]
6666987 Liquid etchant and method for roughening copper surfaceExpiredJun 08, 99Dec 23, 03[C09K]
6544436 Etchant, method for roughening copper surface and method for producing printed wiring boardExpiredJul 28, 97Apr 08, 03[C09K]
6424871 Rotating machine integrated with controller, and inverterExpiredJul 08, 99Jul 23, 02[H02P]
4749552 Automatic titration analysis apparatusExpiredAug 06, 86Jun 07, 88[G01N]
4437811 Submersible pump with alternate pump operation control meansExpiredJun 30, 80Mar 20, 84[F04B]

Top Inventors for This Owner

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