SIEMENS POWER TRANSMISSION & DISTRIBUTION, LLC

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 397
 
  
 
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 399
 
  
 
B21G MAKING NEEDLES, PINS, OR NAILS16
 
  
 
G05B CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS 1100

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5949221 Line powered, primary side connected apparatus injecting voltage compensation into an electric power line using one transformerMay 21, 98Sep 07, 99[G05F]
5905367 Power inverter apparatus using a transformer with its primary winding connected the source end and a secondary winding connected to the load end of an AC power line to insert series compensationMay 21, 98May 18, 99[G05F]
5860866 Steel pin and method for its manufactureJun 03, 97Jan 19, 99[B21G]
5355295 Series-parallel active power line conditioner utilizing temporary link energy boosting for enhanced peak voltage regulation capabilityAug 19, 93Oct 11, 94[H02M]
5349517 Active power line conditioner utilizing harmonic frequency injection for improved peak voltage regulationAug 19, 93Sep 20, 94[H02M]
5329222 Apparatus and method for dynamic voltage restoration of utility distribution networksNov 30, 92Jul 12, 94[G05F]
5321598 Three-phase active filter utilizing rotating axis transformationSep 18, 92Jun 14, 94[H02M]
5309353 Multiple reference frame controller for active filters and power line conditionersOct 02, 92May 03, 94[G05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2003/0225,661 Security constrained optimal dispatch for pricing optimization for electricity marketsAbandonedMar 10, 03Dec 04, 03[G06F]
2003/0225,676 Security constrained transmission and load dispatch for electricity marketsAbandonedMar 10, 03Dec 04, 03[G06F]
6134245 System and method for the compression and transportation of non frame relay data over a frame relay networkExpiredJan 09, 98Oct 17, 00[H04J]
5984173 Neutral point connected apparatus providing compensation to an AC power lineExpiredFeb 02, 98Nov 16, 99[H02M, G05F]
5814975 Inverter controlled series compensatorExpiredJun 05, 95Sep 29, 98[G05F]
5319534 Series-parallel active power line conditioner utilizing reduced-turns-ratio transformer for enhanced peak voltage regulation capabilityExpiredAug 16, 93Jun 07, 94[H02M]
5319535 Active power line conditioner having capability for rejection of common-mode disturbancesExpiredAug 19, 93Jun 07, 94[H02M]
5304957 Low jitter phase locked loop for single phase applicationsExpiredOct 01, 92Apr 19, 94[H03L]
4902864 Versatile electric disconnect switchExpiredDec 09, 88Feb 20, 90[H01H]
4870557 Simplified quasi-harmonic neutralized high power invertersExpiredSep 23, 88Sep 26, 89[H02M]
4833585 Zone filterExpiredAug 03, 88May 23, 89[H02M]
4801874 Method and apparatus for measuring electricityExpiredFeb 27, 87Jan 31, 89[G01R]
4686630 Load management control system and methodExpiredSep 27, 84Aug 11, 87[H02J, G06F]
4651265 Active power conditioner systemExpiredJul 29, 85Mar 17, 87[H02J, H02M]
4622513 Gating of the thyristors in an arcless tap changing regulatorExpiredSep 28, 84Nov 11, 86[G05F]
4475019 Puffer-type compressed gas circuit interrupterExpiredMar 18, 83Oct 02, 84[H01H]
4372180 Gear motor torque reaction absorberExpiredSep 26, 80Feb 08, 83[F16M, F16H]
4363060 Arcless tap changer for voltage regulatorExpiredDec 18, 81Dec 07, 82[H02H]
4337463 Time synchronization master station and remote station systemExpiredAug 22, 80Jun 29, 82[H04Q]
4323743 Means for operating blast valve in two-pressure circuit breakerExpiredDec 19, 79Apr 06, 82[H01H]

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