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 2968
 
 
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 1941
 
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 18119
 
 
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 1329
 
 
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 1063
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 942
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 8400
 
 
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 759
 
 
 
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 786
 
 
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 628

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
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]
2015/0155,793 REPETITIVE SERVOMECHANISM CONTROLLER FOR UNINTERRUPTIBLE POWER SUPPLY SYSTEMNov 14, 14Jun 04, 15[H02M]
2015/0137,604 METHOD TO SELECT OPTIMAL SYNCHRONIZATION SOURCE IN A MULTIPLE UNINTERRUPTIBLE POWER SUPPLY SYSTEMOct 31, 14May 21, 15[H02J]
2015/0098,177 SYSTEM AND METHOD FOR MODULAR DATA CENTEROct 01, 14Apr 09, 15[H05K]
2015/0027,139 APPARATUS AND METHOD FOR SUBCOOLING CONTROL BASED ON SUPERHEAT SETPOINT CONTROLOct 15, 14Jan 29, 15[F25B]
2014/0266,224 System And Method For Improved Accuracy In Battery Resistance Measurement SystemsFeb 27, 14Sep 18, 14[G01R]
2014/0266,784 MESH NETWORK SYNCHRONOUS POWER MONITORING SYSTEMS AND METHODSMar 05, 14Sep 18, 14[G01D]
2014/0278,245 System And Method For Energy Analysis And Predictive Modeling Of Components Of A Cooling SystemMar 11, 14Sep 18, 14[G01M]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
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]
9,049,796 Client connection device for UPS systemMar 08, 12Jun 02, 15[H02B, H05K]
9,038,404 High efficiency cooling systemApr 13, 12May 26, 15[F25D, F25B, H05K]
9,000,613 UPS adaptive output voltage control systemsMay 07, 12Apr 07, 15[H02J]
8,933,702 Battery monitor with correction for internal OHMIC measurements of battery cells in parallel connected battery stringsMay 12, 11Jan 13, 15[G01R, G01N]
8,908,405 Snubber circuit and inverter with the sameJun 15, 12Dec 09, 14[H02M]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
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]
2013/0021,037 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]
2009/0211,773 FIRE SUPPRESSION SYSTEM AND ASSOCIATED METHODSABANMay 01, 09Aug 27, 09[A62C]
2009/0200,868 UNINTERRUPTIBLE POWER SUPPLY WITH RECTIFIER FAST WALK INABANJan 07, 09Aug 13, 09[H02J]

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