Zond Energy Systems, Inc.

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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 582
 
  
 
F03D WIND MOTORS436
 
  
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 2100
 
  
 
F03B MACHINES OR ENGINES FOR LIQUIDS 123
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6503058 Air foil configuration for wind turbineMay 01, 00Jan 07, 03[F03B]
6137187 Variable speed wind turbine generatorAug 08, 97Oct 24, 00[H02P]
5526252 Utility current feedback filter with pulse-width modulated power converterMar 11, 94Jun 11, 96[H02M]
5289041 Speed control system for a variable speed wind turbineAug 17, 92Feb 22, 94[H02P, F03D]
5225712 Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operationNov 27, 91Jul 06, 93[H02P, F03D]
5187427 Static reactive power compensatorNov 27, 91Feb 16, 93[G05F]
5172310 Low impedance bus for power electronicsJul 10, 91Dec 15, 92[H02M]
5155375 Speed control system for a variable speed wind turbineSep 19, 91Oct 13, 92[H02P, F03D]
5083039 Variable speed wind turbineFeb 01, 91Jan 21, 92[H02P, F03D]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6420795 Variable speed wind turbine generatorExpiredAug 16, 00Jul 16, 02[H02P]
5369353 Controlled electrical energy storage apparatus for utility gridsExpiredDec 08, 92Nov 29, 94[G05F]
5365424 High power laminated bus assembly for an electrical switching converterExpiredDec 15, 92Nov 15, 94[H02M, H01B]

Top Inventors for This Owner

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