LIEBERT CORPORATION

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Technologies

Intl Class Technology # of Patents/ App Rank in Class
 
 
 
H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY 2659
 
 
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 1446
 
 
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 1426
 
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 11121
 
 
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 1063
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 843
 
 
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 721
 
 
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 655
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 5361
 
 
 
F24H FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, IN GENERAL 419

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2014/0157,821 RECEIVER TANK PURGE IN VAPOR COMPRESSION COOLING SYSTEM WITH PUMPED REFRIGERANT ECONOMIZATIONNov 13, 13Jun 12, 14[F25B]
2014/0159,493 MULTIPLE UPS SYSTEM HAVING MULTI-WAY POWER TIE SYSTEM AND INTELLIGENT POWER SHARING CONTROLNov 13, 13Jun 12, 14[H02J]
2014/0163,744 FAULT DETECTION IN A COOLING SYSTEM WITH A PLURALITY OF IDENTICAL COOLING CIRCUITSDec 02, 13Jun 12, 14[F24F]
2014/0137,573 Expansion Valve Position Control Systems And MethodsNov 13, 13May 22, 14[F25B]
2014/0137,585 EXPANSION VALVE SETPOINT CONTROL SYSTEMS AND METHODSNov 13, 13May 22, 14[F25B]
2014/0139,022 Systems And Methods For Balancing UPS Output Voltages During Transitions Between Operating ModesNov 13, 13May 22, 14[H02M]
2014/0139,299 EMI Filter Assemblies For Busbars Of An UPSNov 13, 13May 22, 14[H03H]
2014/0132,074 TECHNIQUES FOR IMPROVING OPERATION OF STATIC TRANSFER SWITCHES DURING VOLTAGE DISTURBANCESOct 16, 13May 15, 14[H02J]
2014/0132,080 OPERATING A STATIC TRANSFER SWITCH TO ELIMINATE TRANSFORMER INRUSH CURRENT IN THE PRESENCE OF RESIDUAL FLUXOct 17, 13May 15, 14[H03K]
2014/0113,506 BATTERY CELL TERMINAL QUICK CONNECT CLAMP WITH CONNECTING TABOct 09, 13Apr 24, 14[H01R]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
8,783,049 Cooling system with indirect humidity determinationDec 13, 10Jul 22, 14[G06F, F25D, F24F, F25B, H05K, B01F]
8,733,729 Back pressure capable solenoid operated diaphragm pilot valveOct 10, 11May 27, 14[F16K]
8,726,976 Laminated sheet manifold for microchannel heat exchangerFeb 18, 09May 20, 14[F28D, F28F, B29C]
8,699,253 Control method for soft switch circuit in switch power sourceSep 05, 08Apr 15, 14[G05F, H02M]
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]

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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]
2010/0094,466 INTEGRATED QUIET AND ENERGY EFFICIENT MODES OF OPERATION FOR AIR-COOLED CONDENSERSep 15, 09Apr 15, 10[G05B]
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]
2009/0056,348 MOTORIZED BALL VALVE CONTROL SYSTEM FOR FLUID COOLED HEAT EXCHANGEROct 31, 08Mar 05, 09[G05B, F25D]
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]
2008/0251,240 INTEGRATED HEAT EXCHANGERS IN A RACK FOR VERTICAL BOARD STYLE COMPUTER SYSTEMSMar 20, 08Oct 16, 08[F24H]
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]

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