Lambda Electronics, Inc.

Patent Owner

Watch Compare Add to Portfolio

Stats

Details

Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS 275
 
  
 
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 2100
 
  
 
G05F SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES 199
 
  
 
G08B SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS 193

Top Patents (by citation)

Upgrade to the Professional Level to View Top Patents for this Owner. Learn More

Recent Publications

  • No Recent Publications to Display

Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6744647 Parallel connected converters apparatus and methods using switching cycle with energy holding stateApr 12, 02Jun 01, 04[H02H]
6703817 Pulse width modulated power conversion apparatus and methods using capacitor-charge feedbackMar 07, 02Mar 09, 04[H02M, G05F]
6606259 Clamped-inductance power converter apparatus with transient current limiting capability and operating methods thereforAug 23, 01Aug 12, 03[H02H]
5291382 Pulse width modulated DC/DC converter with reduced ripple current coponent stress and zero voltage switching capabilityJan 06, 92Mar 01, 94[H02M]
5289166 Voltage detectorOct 04, 91Feb 22, 94[G08B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2005/0270,007 Simplified adaptive control method for power convertersAbandonedMay 04, 04Dec 08, 05[G05F]
2005/0243,583 Method and circuit for sensing the output current of power sourcesAbandonedMay 03, 04Nov 03, 05[H02J]
6961253 Drive circuits for synchronous rectifiersExpiredOct 06, 00Nov 01, 05[H02M]
2002/0175,719 Transistor drive circuits and methods using selective discharge of terminal capacitanceAbandonedAug 29, 01Nov 28, 02[H03K, H03B]
6442047 Power conversion apparatus and methods with reduced current and voltage switchingExpiredAug 25, 00Aug 27, 02[H02M]
6289580 Surface mount power supply deviceExpiredFeb 02, 99Sep 18, 01[H01R]
6225862 Series resonant circuit with inherent short circuit protectionExpiredApr 28, 99May 01, 01[H03K]
6201706 Power supply device with externally disconnectable "Y" capacitorsExpiredDec 03, 98Mar 13, 01[H05K]
6008997 Series resonant converter with inherent short circuit protectionExpiredMar 22, 99Dec 28, 99[H02J]
6005779 Rectification and inversion circuitsExpiredMar 11, 99Dec 21, 99[H02M]
5920461 Surface mount power supply deviceExpiredMay 12, 97Jul 06, 99[H01R, H05K]
5894216 Solid-state saturable reactor emulatorExpiredMar 17, 98Apr 13, 99[G05F]
5465201 Overload protection of switch mode convertersExpiredJun 27, 94Nov 07, 95[H02M, H02H]
5438505 Adaptive control method for power convertersExpiredJul 15, 93Aug 01, 95[G05F]
5430405 Control circuit for converters operating in the discontinuous modeExpiredAug 12, 92Jul 04, 95[H03K, H02M]
5394025 Stabilization of MOS-FET type voltage to current convertersExpiredMay 28, 93Feb 28, 95[H03K, G06G]
5339217 Composite printed circuit board and manufacturing method thereofExpiredApr 20, 93Aug 16, 94[H05K]
5021937 Maximum duty cycle limiting of pulse width modulatorsExpiredOct 18, 89Jun 04, 91[H02M]
5014182 High frequency self-oscillating inverter with negligible switching lossesExpiredApr 19, 89May 07, 91[H02M]
4985821 Indirect current sensing of DC to DC convertersExpiredApr 16, 90Jan 15, 91[H02M]

Top Inventors for This Owner

Upgrade to the Professional Level to View Top Inventors for this Owner. Learn More

We are sorry but your current selection exceeds the maximum number of comparisons () for this membership level. Upgrade to our Level for up to -1 comparisons!

We are sorry but your current selection exceeds the maximum number of portfolios (0) for this membership level. Upgrade to our Level for up to -1 portfolios!.