LIEBERT CORPORATION

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Technologies

Intl Class Technology # of Patents Rank
 
 
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 2049
 
 
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 926
 
 
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 958
 
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 993
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 531
 
 
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 542
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 5323
 
 
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 416
 
 
 
F24H FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, IN GENERAL 410
 
 
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 348

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2014/0033,753 Load Estimator For Control Of Vapor Compression Cooling System With Pumped Refrigerant EconomizationOct 04, 13Feb 06, 14[F25B]
2014/0007,597 Cooling System For High Density Heat LoadsDec 21, 12Jan 09, 14[H05K]
2013/0302,655 Ultrasonic Electrolyte SensorMay 08, 13Nov 14, 13[H01M]
2013/0187,467 INTELLIGENT ARBITRATION OF POWER LINE BASED COORDINATING SIGNALS BETWEEN MULTIPLE UPS BUSES WIHTOUT ANY AUXILIARY SIGNALSJul 30, 12Jul 25, 13[H02J]
2013/0168,059 Pumped Refrigerant Cooling System With 1+1 To N+1 And Built-In RedundancyDec 21, 12Jul 04, 13[B23P, F28F]
2013/0139,529 Fan Speed Control For Air-Cooled Condenser In Precision CoolingJun 07, 12Jun 06, 13[F25D]
2013/0098,085 HIGH EFFICIENCY COOLING SYSTEMApr 13, 12Apr 25, 13[F25D, F25B]
2013/0098,086 VAPOR COMPRESSION COOLING SYSTEM WITH IMPROVED ENERGY EFFICIENCY THROUGH ECONOMIZATIONApr 13, 12Apr 25, 13[F25B]
2013/0098,087 COOLING SYSTEM WITH TANDEM COMPRESSORS AND ELECTRONIC EXPANSION VALVE CONTROLApr 13, 12Apr 25, 13[F25B]
2013/0098,088 MULTI-STAGE COOLING SYSTEM WITH TANDEM COMPRESSORS AND OPTIMIZED CONTROL OF SENSIBLE COOLING AND DEHUMIDIFICATIONApr 13, 12Apr 25, 13[F25B]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8,682,455 Repetitive controller, control method thereof and feedback control systemApr 19, 12Mar 25, 14[G05B]
8,665,619 T-type three-level inverter circuitMay 10, 11Mar 04, 14[H02H]
8,583,289 Climate control system for data centersFeb 16, 09Nov 12, 13[G05B]
8,519,567 Method and apparatus for maintaining uninterruptible power suppliesDec 21, 11Aug 27, 13[H02H]
8,484,984 Method and apparatus for equalizing a pumped refrigerant systemJan 26, 11Jul 16, 13[F25D]
8,448,804 Pivoting cover with a fastening deviceOct 04, 06May 28, 13[B65D]
8,450,874 User managed power system with securityDec 07, 07May 28, 13[H01R, H02B, G06F, H02J]
8,416,592 Control method for soft switch circuit in switch power supplySep 08, 08Apr 09, 13[H02H, H02M]
8,387,687 Method and apparatus for cooling electronic enclosuresMar 14, 06Mar 05, 13[F25D, H05K, G05D]
8,373,306 Adaptive and modular UPS system and methodOct 20, 09Feb 12, 13[H02J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Filing Date Issue/Pub Date Intl Class
2011/0195,922 Beta-L-2'-Deoxy-Nucleosides for the Treatment of Hepatitis BDec 08, 09Aug 11, 11[C07H, A61P, A61K]
2010/0296,319 POWER SOURCE MODULE WITH BROAD INPUT VOLTAGE RANGESep 08, 08Nov 25, 10[H02M]
2010/0109,545 Automatic Compensation For Degradation Of Optocoupler Light Emitting DiodeOct 07, 09May 06, 10[H05B]
2010/0110,621 RACK WITH VERTICAL MOUNTING PROVIDING ROOM FOR RACK PDUSep 30, 09May 06, 10[A47F, H05K]
2010/0085,708 HIGH-EFFICIENCY, FLUID-COOLED UPS CONVERTEROct 06, 09Apr 08, 10[F28D, F28F, H05K]
2009/0251,005 UNDERVOLTAGE TRANSFER DETECTIONApr 07, 08Oct 08, 09[H02J]
2009/0217,527 HEAT EXCHANGER CORE TUBE FOR INCREASED CORE THICKNESSMay 05, 09Sep 03, 09[B23P]
2009/0211,773 FIRE SUPPRESSION SYSTEM AND ASSOCIATED METHODSMay 01, 09Aug 27, 09[A62C]
2009/0200,868 UNINTERRUPTIBLE POWER SUPPLY WITH RECTIFIER FAST WALK INJan 07, 09Aug 13, 09[H02J]
2009/0080,999 TOOLLESS MECHANICAL FASTENERSep 24, 07Mar 26, 09[B23P, F16B]
2009/0031,735 SYSTEM AND METHOD OF CONTROLLING FLUID FLOW THROUGH A FLUID COOLED HEAT EXCHANGERAug 01, 07Feb 05, 09[F25B]
2009/0009,001 METHOD AND APPARATUS FOR SYNCHRONIZATION OF ACTIONS IN A PARALLEL UPS SYSTEM USING A SERIAL COMMUNICATIONS BUSJul 05, 07Jan 08, 09[H02J]
2008/0289,808 HEAT EXCHANGER CORE TUBE FOR INCREASED CORE THICKNESSMay 21, 07Nov 27, 08[F28F]
2008/0278,003 HIGH EFFICIENCY ALTERNATIVE/RENEWABLE POWERED UPS SYSTEMMay 09, 07Nov 13, 08[H02J]
2008/0275,705 Battery Tester with Wireless Voice Status MessagesMay 05, 07Nov 06, 08[H04B, G08B, G10L]
2008/0216,493 MICROCHANNEL COOLING CONDENSER FOR PRECISION COOLING APPLICATIONSJan 10, 08Sep 11, 08[F25B, H05K]
2008/0177,595 METHOD FOR ESTABLISHING CONSISTENCY OF PROVIDED SERVICES ACROSS GEOGRAPHIC OR CULTURAL DIFFERENCESDec 14, 07Jul 24, 08[G06F]
2008/0092,577 THERMAL LOAD LOCATORFeb 01, 07Apr 24, 08[F25D]
7,255,640 Cable and air management adapter system for enclosures housing electronic equipmentOct 13, 03Aug 14, 07[H02B]
2007/0117,471 Battery connection systems and methods for use thereofNov 17, 06May 24, 07[H01R]

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