GENERAL SIGNAL POWER SYSTEMS, INC.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 5115
 
  
 
G06F ELECTRIC DIGITAL DATA PROCESSING 3444
 
  
 
G01R MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES 1158
 
  
 
G04F TIME-INTERVAL MEASURING 118
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
  
 
G06C DIGITAL COMPUTERS IN WHICH ALL THE COMPUTATION IS EFFECTED MECHANICALLY 13
 
  
 
H01H ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES 193
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 176

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
5670833 Power transfer method and apparatus for uninterruptible power systemsNov 23, 94Sep 23, 97[H02J]
5619076 Method and apparatus for connection and disconnection of batteries to uninterruptible power systems and the likeDec 19, 94Apr 08, 97[H01H]
5615129 Method and apparatus for adaptive and corrective determination of battery run-time in uninterruptible power systemsFeb 21, 95Mar 25, 97[G04F]
5602462 Uninterruptible power systemFeb 21, 95Feb 11, 97[H02J, G05F]
5579197 Backup power system and methodJan 24, 95Nov 26, 96[H02H]
5473533 Method and apparatus for efficient phase and frequency coherence locking optimized for digital systemsDec 02, 93Dec 05, 95[G06F]
5315533 Back-up uninterruptible power systemMay 17, 91May 24, 94[G06F]
5302858 Method and apparatus for providing battery charging in a backup power systemDec 11, 91Apr 12, 94[H02J]
5295078 Method and apparatus for determination of battery run-time in uninterruptible power systemMay 15, 92Mar 15, 94[G06F]
5198698 Auxiliary power supply system for providing DC power on demandFeb 11, 91Mar 30, 93[H02J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5790391 Standby power systemExpiredNov 29, 96Aug 04, 98[H02J, H02M]
5426579 Method and apparatus for stabilizing AC power supply systems connected to power factor correcting loadsExpiredJul 28, 93Jun 20, 95[H02M]
5332927 Power supply system for a telecommunication systemExpiredFeb 25, 93Jul 26, 94[H02J]
5229651 Method and apparatus for line power monitoring for uninterruptible power suppliesExpiredSep 08, 89Jul 20, 93[H02H]
5001399 Power supply for vacuum fluorescent displaysExpiredFeb 16, 90Mar 19, 91[H05B, G09G]
4717996 Gated parallel power switching devices protection circuitExpiredJan 14, 87Jan 05, 88[H02H]
4692854 Method and apparatus for modulating inverter pulse widthExpiredMar 04, 86Sep 08, 87[H02M]
4644112 Linear transformer switchExpiredJan 03, 86Feb 17, 87[H01H]
4453207 DC To AC power inverterExpiredMar 31, 82Jun 05, 84[H02M]

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