LIEBERT CORPORATION

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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 3167
 
 
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 2143
 
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 18129
 
 
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 1528
 
 
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 1067
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 949
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 9408
 
 
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 761
 
 
 
H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF 784
 
 
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 631

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
2016/0223,620 METHOD FOR DETECTING A FAILING RECTIFIER OR RECTIFIER SOURCEFeb 03, 16Aug 04, 16[G01R, H02M, H02J]
2016/0209,901 SYSTEM AND METHOD FOR RACK MOUNTABLE MODULAR DC POWER UNITSep 04, 14Jul 21, 16[G06F]
2016/0136,791 TOOL SUSPENSION DEVICEJan 24, 16May 19, 16[B25B]
2016/0138,260 System And Method For Modular Data CenterJan 21, 16May 19, 16[E04B]
2016/0138,840 COOLING SYSTEM FOR HIGH DENSITY HEAT LOADJan 22, 16May 19, 16[F25D, F25B]
2016/0109,526 SYSTEM AND METHOD FOR UPS BATTERY MONITORING AND DATA ANALYSISMay 05, 14Apr 21, 16[G05B, G01R, H02J]
2016/0094,209 METHOD AND CIRCUIT FOR ELIMINATING TRANSFORMER SATURATION IN THE PRESENCE OF DC OFFSET VOLTAGESep 11, 15Mar 31, 16[H03K]
2016/0084,539 COOLING SYSTEM HAVING A CONDENSER WITH A MICRO-CHANNEL COOLING COIL AND SUB-COOLER HAVING A FIN-AND-TUBE HEAT COOLING COILSep 16, 15Mar 24, 16[F25B]
2016/0061,495 Vapor Compression Cooling System With Improved Energy Efficiency Through EconomizationOct 09, 15Mar 03, 16[F25B]
2015/0244,206 3-WIRE TRANSFORMER-FREE UPS SYSTEM AND METHOD OF CONTROL TO REDUCE COMMON MODE CURRENTFeb 06, 15Aug 27, 15[H02M, H02J]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
9,431,854 Multiple UPS system having multi-way power tie system and intelligent power sharing controlNov 13, 13Aug 30, 16[H02J]
9,373,962 Intelligent arbitration of power line based coordinating signals between multiple UPS buses without any auxiliary signalsJul 30, 12Jun 21, 16[G05B, H01H, B60L, H02J]
9,316,424 Multi-stage cooling system with tandem compressors and optimized control of sensible cooling and dehumidificationApr 13, 12Apr 19, 16[F25B]
9,312,781 Control method during zero-crossing operation of bridge arms in UPSJun 08, 11Apr 12, 16[H02M, H02J]
9,297,571 Device and methodology for the removal of heat from an equipment rack by means of heat exchangers mounted to a doorJul 02, 12Mar 29, 16[F25D]
9,268,000 System and method for improved accuracy in battery resistance measurement systemsFeb 27, 14Feb 23, 16[G01R, G01N]
9,270,160 Repetitive servomechanism controller for uninterruptible power supply systemNov 14, 14Feb 23, 16[H02M, H02J]
9,243,822 Cooling system for high density heat loadAug 31, 12Jan 26, 16[F25D, F25B]
9,243,823 Cooling system for high density heat loadSep 10, 12Jan 26, 16[F25D, F25B]
9,203,266 UPS system and method of supplying power to non-linear loadJun 29, 12Dec 01, 15[H02J]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2014/0139,299 EMI Filter Assemblies For Busbars Of An UPSABANNov 13, 13May 22, 14[H03H]
2013/0139,529 Fan Speed Control For Air-Cooled Condenser In Precision CoolingABANJun 07, 12Jun 06, 13[F25D]
2013/0098,086 VAPOR COMPRESSION COOLING SYSTEM WITH IMPROVED ENERGY EFFICIENCY THROUGH ECONOMIZATIONABANApr 13, 12Apr 25, 13[F25B]
2013/0091,874 Variable Refrigerant Flow Cooling SystemABANApr 03, 12Apr 18, 13[F25B]
2013/0021,037 WIRELESS PORTABLE BATTERY CAPACITY TEST SYSTEMABANJan 20, 12Jan 24, 13[G01R]
2012/0291,984 Kind Of Air Conditioner System And Control Method Of Its Condensing FanABANNov 14, 11Nov 22, 12[F28F, G05D]
2012/0174,612 Computer Room Air Conditioner With Pre-CoolerABANMay 13, 11Jul 12, 12[F28D, F25D]
2012/0078,550 System And Method For Displaying Battery String Cell Data In Polar Coordinate Graphical FormABANMar 25, 11Mar 29, 12[G01R, G06T]
8,063,671 Driving circuit of switch deviceExpiredJun 13, 08Nov 22, 11[H03B]
2011/0279,124 FLOAT CURRENT MONITORABANMay 12, 11Nov 17, 11[G01R]
2011/0195,922 Beta-L-2'-Deoxy-Nucleosides for the Treatment of Hepatitis BABANDec 08, 09Aug 11, 11[C07H, A61P, A61K]
2011/0101,118 CONDENSATION PREVENTION SYSTEM AND METHODS OF USEABANJan 06, 11May 05, 11[F24F]
2010/0296,319 POWER SOURCE MODULE WITH BROAD INPUT VOLTAGE RANGEABANSep 08, 08Nov 25, 10[H02M]
2010/0204,838 ENERGY EFFICIENT AIR CONDITIONING SYSTEM AND METHOD UTILIZING VARIABLE CAPACITY COMPRESSOR AND SENSIBLE HEAT RATIO LOAD MATCHINGABANFeb 11, 10Aug 12, 10[G05B, F28D, F25B, F01C]
2010/0109,545 Automatic Compensation For Degradation Of Optocoupler Light Emitting DiodeABANOct 07, 09May 06, 10[H05B]
2010/0110,621 RACK WITH VERTICAL MOUNTING PROVIDING ROOM FOR RACK PDUABANSep 30, 09May 06, 10[A47F, H05K]
2010/0094,466 INTEGRATED QUIET AND ENERGY EFFICIENT MODES OF OPERATION FOR AIR-COOLED CONDENSERABANSep 15, 09Apr 15, 10[G05B]
2010/0085,708 HIGH-EFFICIENCY, FLUID-COOLED UPS CONVERTERABANOct 06, 09Apr 08, 10[F28D, F28F, H05K]
2009/0251,005 UNDERVOLTAGE TRANSFER DETECTIONABANApr 07, 08Oct 08, 09[H02J]
2009/0217,527 HEAT EXCHANGER CORE TUBE FOR INCREASED CORE THICKNESSABANMay 05, 09Sep 03, 09[B23P]

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