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 2759
 
 
 
F25B REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS 1748
 
 
 
F25D REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS 1526
 
 
 
H05K PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS 15112
 
 
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 1067
 
 
 
F24F AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING 827
 
 
 
F28F DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION 844
 
 
 
G06F ELECTRIC DIGITAL DATA PROCESSING 8384
 
 
 
G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES 753
 
 
 
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 579

Top Patents (by citation)

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Recent Publications

Publication # Title Filing Date Pub Date Intl Class
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]
2014/0281,649 Method For Automatic Mapping Of AC Phase Conductors And Identification Of AC Buses In A Multi-Bus Power SystemJan 27, 14Sep 18, 14[G06F]
2014/0230,466 SCROLL COMPRESSOR DIFFERENTIAL PRESSURE CONTROL DURING COMPRESSOR STARTUP TRANSITIONSJan 31, 14Aug 21, 14[F25B]
2014/0230,467 SCROLL COMPRESSOR DIFFERENTIAL PRESSURE CONTROL DURING COMPRESSOR SHUTDOWN TRANSITIONSJan 31, 14Aug 21, 14[F25B]
2014/0236,361 Scroll Compressor Differential Pressure Control TechniquesJan 31, 14Aug 21, 14[G05D]
2014/0157,821 RECEIVER TANK PURGE IN VAPOR COMPRESSION COOLING SYSTEM WITH PUMPED REFRIGERANT ECONOMIZATIONNov 13, 13Jun 12, 14[F25B]

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
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]
8,881,541 Cooling system with tandem compressors and electronic expansion valve controlApr 13, 12Nov 11, 14[F25B]
8,833,097 Cooling fluid flow regulation distribution system and methodJul 19, 11Sep 16, 14[F28D, F28F, G06F, H05K]
8,791,597 Uninterruptible power supply with a dual gain voltage regulator controlling an inverter output voltage based on active and reactive components of currentMar 02, 11Jul 29, 14[H02J]
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]

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2013/0021,037 WIRELESS PORTABLE BATTERY CAPACITY TEST SYSTEMABANJan 20, 12Jan 24, 13[G01R]
2012/0078,550 System And Method For Displaying Battery String Cell Data In Polar Coordinate Graphical FormABANMar 25, 11Mar 29, 12[G01R, G06T]
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]
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]
2009/0080,999 TOOLLESS MECHANICAL FASTENERABANSep 24, 07Mar 26, 09[B23P, F16B]
2009/0056,348 MOTORIZED BALL VALVE CONTROL SYSTEM FOR FLUID COOLED HEAT EXCHANGERABANOct 31, 08Mar 05, 09[G05B, F25D]
2009/0031,735 SYSTEM AND METHOD OF CONTROLLING FLUID FLOW THROUGH A FLUID COOLED HEAT EXCHANGERABANAug 01, 07Feb 05, 09[F25B]
2009/0009,001 METHOD AND APPARATUS FOR SYNCHRONIZATION OF ACTIONS IN A PARALLEL UPS SYSTEM USING A SERIAL COMMUNICATIONS BUSABANJul 05, 07Jan 08, 09[H02J]
2008/0289,808 HEAT EXCHANGER CORE TUBE FOR INCREASED CORE THICKNESSABANMay 21, 07Nov 27, 08[F28F]
2008/0278,003 HIGH EFFICIENCY ALTERNATIVE/RENEWABLE POWERED UPS SYSTEMABANMay 09, 07Nov 13, 08[H02J]

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