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 3163
 
 
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 2140
 
 
 
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 1529
 
 
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 1068
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 943
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 8409
 
 
 
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 883
 
 
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 759
 
 
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 632

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
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]
2015/0230,367 High Efficiency Cooling SystemApr 22, 15Aug 13, 15[F25D, F25B, H05K]
2015/0216,087 METHOD OF RETROFITTING COMPUTER ROOM AIR CONDITIONER TO INCREASE A MAXIMUM TEMPERATURE DELTAApr 13, 15Jul 30, 15[H05K]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
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]
9,140,475 Receiver tank purge in vapor compression cooling system with pumped refrigerant economizationNov 13, 13Sep 22, 15[F25B]
9,083,038 Battery cell terminal quick connect clamp with connecting tabOct 09, 13Jul 14, 15[G01R, H01R, H01M]

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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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