Powerware Corporation
40Patents
0Active
40Granted
41Portfolio score
Filing activity: Mar 29, 1993 → Mar 2, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6396170B1 | Method and apparatus for coordinating uninterruptible power supply modules to provide scalable, redundant power | Electricity | 249 | Expired |
| US6292379A | Distributed internal fault bypass in a modular uninterruptible power supply | Electricity | 229 | Expired |
| US6295215A | AC power supply apparatus with economy mode and methods of operation thereof | Electricity | 133 | Expired |
| US6310783A | Modular method and apparatus for building an uninterruptible power system (UPS) | Emerging Cross-Sectional Technologies | 124 | Expired |
| US6160722A | Uninterruptible power supplies with dual-sourcing capability and methods of operation thereof | Electricity | 115 | Expired |
| US6400586B2 | Power factor corrected UPS with improved connection of battery to neutral | Emerging Cross-Sectional Technologies | 100 | Expired |
| US6483730B2 | Power converters with AC and DC operating modes and methods of operation thereof | Electricity | 84 | Expired |
| US6356471B1 | Dynamic feedback adaptive control system and method for paralleling electric power sources and an uninterruptible power supply including same | Electricity | 79 | Expired |
| US6330176A | Multi-input power transfer and uninterruptible power supply apparatus and methods of operation thereof | Electricity | 73 | Expired |
| US6314007A | Multi-mode power converters incorporating balancer circuits and methods of operation thereof | Electricity | 71 | Expired |
| US6356284B1 | Operating system-independent graphical user interface with sliding panel | Physics | 69 | Expired |
| US6906933B2 | Power supply apparatus and methods with power-factor correcting bypass mode | Emerging Cross-Sectional Technologies | 65 | Expired |
| US6486399B1 | Pole mount cabinet and method for assembling the same | Electricity | 64 | Expired |
| US6069412A | Power factor corrected UPS with improved connection of battery to neutral | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6218744A | Uninterruptible power supply and ferroresonant transformer for use therewith | Electricity | 48 | Expired |
| US6661678B2 | Power factor corrected UPS with improved connection of battery to neutral and methods of operation thereof | Emerging Cross-Sectional Technologies | 42 | Expired |
| US6629247B1 | Methods, systems, and computer program products for communications in uninterruptible power supply systems using controller area networks | Electricity | 41 | Expired |
| US6348782B1 | Uninterruptible power supply systems, voltage regulators and operating methods employing controlled ferroresonant transformer circuits | Electricity | 37 | Expired |
| US6266260A | Inverter having center switch and uninterruptible power supply implementing same | Electricity | 34 | Expired |
| US6605879B2 | Battery charger control circuit and an uninterruptible power supply utilizing same | Electricity | 33 | Expired |
| US7132833B2 | System for detecting defective battery packs | Emerging Cross-Sectional Technologies | 31 | Expired |
| US6201720A | Apparatus and methods for space-vector domain control in uninterruptible power supplies | Electricity | 31 | Expired |
| US6753622B2 | Uninterruptible power supply systems and methods using rectified AC with current control | Electricity | 29 | Expired |
| US6462961B1 | Component housing assembly having universal mounting capability and mounting bracket for use therewith | Electricity | 24 | Expired |
| US6295216A | Power supply apparatus with selective rectifier harmonic input current suppression and methods of operation thereof | Emerging Cross-Sectional Technologies | 23 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.