Assignee
POWERWARE CORP
US39 patents
Top patents by PatentIndex Score
US6483730B2Nov 19, 2002
Power converters with AC and DC operating modes and methods of operation thereof
POWERWARE CORP119 citations98
US6400586B2Jun 4, 2002
Power factor corrected UPS with improved connection of battery to neutral
POWERWARE CORP114 citations98
US6330176B1Dec 11, 2001
Multi-input power transfer and uninterruptible power supply apparatus and methods of operation thereof
POWERWARE CORP154 citations98
US6314007B2Nov 6, 2001
Multi-mode power converters incorporating balancer circuits and methods of operation thereof
POWERWARE CORP104 citations98
US6069412AMay 30, 2000
Power factor corrected UPS with improved connection of battery to neutral
POWERWARE CORP102 citations98
US6292379B1Sep 18, 2001
Distributed internal fault bypass in a modular uninterruptible power supply
POWERWARE CORP271 citations97
US6661678B2Dec 9, 2003
Power factor corrected UPS with improved connection of battery to neutral and methods of operation thereof
POWERWARE CORP63 citations96
US6396170B1May 28, 2002
Method and apparatus for coordinating uninterruptible power supply modules to provide scalable, redundant power
POWERWARE CORP284 citations96
US6310783B1Oct 30, 2001
Modular method and apparatus for building an uninterruptible power system (UPS)
POWERWARE CORP224 citations96
US6295215B1Sep 25, 2001
AC power supply apparatus with economy mode and methods of operation thereof
POWERWARE CORP256 citations96
US6262899B1Jul 17, 2001
Power factor corrected UPS maintaining neutral integrity and methods of operation thereof
POWERWARE CORP29 citations96
US6160722ADec 12, 2000
Uninterruptible power supplies with dual-sourcing capability and methods of operation thereof
POWERWARE CORP174 citations96
US6906933B2Jun 14, 2005
Power supply apparatus and methods with power-factor correcting bypass mode
POWERWARE CORP99 citations95
US6266260B1Jul 24, 2001
Inverter having center switch and uninterruptible power supply implementing same
POWERWARE CORP81 citations95
US6218744B1Apr 17, 2001
Uninterruptible power supply and ferroresonant transformer for use therewith
POWERWARE CORP96 citations95
US6201720B1Mar 13, 2001
Apparatus and methods for space-vector domain control in uninterruptible power supplies
POWERWARE CORP56 citations94
US6819576B2Nov 16, 2004
Power conversion apparatus and methods using balancer circuits
POWERWARE CORP20 citations93
US6629247B1Sep 30, 2003
Methods, systems, and computer program products for communications in uninterruptible power supply systems using controller area networks
POWERWARE CORP88 citations93
US6605879B2Aug 12, 2003
Battery charger control circuit and an uninterruptible power supply utilizing same
POWERWARE CORP63 citations93
US6295216B1Sep 25, 2001
Power supply apparatus with selective rectifier harmonic input current suppression and methods of operation thereof
POWERWARE CORP59 citations93
US7132833B2Nov 7, 2006
System for detecting defective battery packs
POWERWARE CORP45 citations92
US6753622B2Jun 22, 2004
Uninterruptible power supply systems and methods using rectified AC with current control
POWERWARE CORP50 citations92
US6515883B2Feb 4, 2003
Single-stage power converter and an uninterruptible power supply using same
POWERWARE CORP25 citations92
US6486399B1Nov 26, 2002
Pole mount cabinet and method for assembling the same
POWERWARE CORP101 citations91
US6374460B1Apr 23, 2002
Multi-function handle and modular chassis incorporating same
POWERWARE CORP37 citations91
US6356471B1Mar 12, 2002
Dynamic feedback adaptive control system and method for paralleling electric power sources and an uninterruptible power supply including same
POWERWARE CORP133 citations90
US6348782B1Feb 19, 2002
Uninterruptible power supply systems, voltage regulators and operating methods employing controlled ferroresonant transformer circuits
POWERWARE CORP58 citations90
US6391489B1May 21, 2002
Battery terminal jumper clip
POWERWARE CORP39 citations88
US6356284B1Mar 12, 2002
Operating system-independent graphical user interface with sliding panel
POWERWARE CORP136 citations88
US6462961B1Oct 8, 2002
Component housing assembly having universal mounting capability and mounting bracket for use therewith
POWERWARE CORP51 citations86
US6599657B1Jul 29, 2003
Battery pack housing and battery pack and power supply device incorporating the same
POWERWARE CORP47 citations83
US6121756ASep 19, 2000
Charger
POWERWARE CORP17 citations83
US6549440B2Apr 15, 2003
AC power supply apparatus and methods providing output control based on estimated instantaneous reactive power
POWERWARE CORP17 citations82
US6418024B2Jul 9, 2002
Heat sink apparatus and method of attaching the heat sink apparatus to a device
POWERWARE CORP15 citations82
US6219246B1Apr 17, 2001
Heat sink apparatus
POWERWARE CORP15 citations82
US6724596B2Apr 20, 2004
Hysteretic current control method and an uninterruptible power supply using same
POWERWARE CORP11 citations73
US6307763B1Oct 23, 2001
Twelve-pulse rectifiers including separate six-pulse controllers and methods of controlling same
POWERWARE CORP10 citations68
US7129822B2Oct 31, 2006
Devices for detecting the presence of a source of power
POWERWARE CORP10 citations61
US6535100B2Mar 18, 2003
Insulated transformer foil windings with breakouts and methods for forming the same
POWERWARE CORP8 citations58