Krishnamoorthy; Ravishanker
Patent Applications and Registrations
Patent applications and USPTO patent grants for Krishnamoorthy; Ravishanker.The latest application filed is for "current balancing for light-emitting-diode-based illumination systems".
Company Profile
1.70.36
- Krishnamoorthy; Ravishanker - Singapore SG
- Krishnamoorthy; Ravishanker - Rivervale Crest SG
- Krishnamoorthy; Ravishanker - Chiltern Park SG
- Krishnamoorthy; Ravishanker - Chiltren Park SG
Patent Activity
| Patent | Date |
|---|---|
| Active clamp for motor driver Grant 9,876,450 - Wang , et al. January 23, 2 | 2018-01-23 |
| Failure prediction in a rotating device Grant 9,863,852 - Krishnamoorthy , et al. January 9, 2 | 2018-01-09 |
| Controlled inductive sense system Grant 9,787,227 - Wang , et al. October 10, 2 | 2017-10-10 |
| Adaptive brake timing for a brushless motor Grant 9,748,878 - Susanto , et al. August 29, 2 | 2017-08-29 |
| Apparatuses for controlling operation of a motor of a fan assembly based on an induced voltage or a back electromotive force Grant 9,695,832 - Krishnamoorthy , et al. July 4, 2 | 2017-07-04 |
| Method and apparatus for windowless BEMF detection Grant 9,571,018 - Krishnamoorthy February 14, 2 | 2017-02-14 |
| Current balancing for light-emitting-diode-based illumination systems Grant 9,554,441 - Sutardja , et al. January 24, 2 | 2017-01-24 |
| Method to eliminate current surge during spindle spin up Grant 9,543,863 - Krishnamoorthy , et al. January 10, 2 | 2017-01-10 |
| System and method for supplying power at startup Grant 9,502,957 - Krishnamoorthy , et al. November 22, 2 | 2016-11-22 |
| Systems and methods for adaptive motor speed control Grant 9,425,721 - Krishnamoorthy , et al. August 23, 2 | 2016-08-23 |
| Light emitting diodes generating white light Grant 9,408,274 - Sutardja , et al. August 2, 2 | 2016-08-02 |
| Systems and methods for programming of a cooling fan arrangement Grant 9,334,870 - Krishnamoorthy , et al. May 10, 2 | 2016-05-10 |
| Lowest power mode for a mobile drive Grant 9,329,660 - Krishnamoorthy , et al. May 3, 2 | 2016-05-03 |
| Method and apparatus for TRIAC applications Grant 9,258,863 - Krishnamoorthy , et al. February 9, 2 | 2016-02-09 |
| Current balancing circuits for light-emitting-diode-based illumination systems Grant 9,241,385 - Sutardja , et al. January 19, 2 | 2016-01-19 |
| Method and apparatus to reduce overcurrent during the startup of a switching regulator Grant 9,197,124 - Shu , et al. November 24, 2 | 2015-11-24 |
| Current Balancing For Light-emitting-diode-based Illumination Systems App 20150271889 - Sutardja; Sehat ; et al. | 2015-09-24 |
| Active Clamp For Motor Driver App 20150214874 - WANG; Yichao ; et al. | 2015-07-30 |
| Ballast Resistor For Super-high-voltage Devices App 20150187754 - Sutardja; Sehat ; et al. | 2015-07-02 |
| Current balancing circuits for light-emitting-diode-based illumination systems Grant 9,055,647 - Sutardja , et al. June 9, 2 | 2015-06-09 |
| Ballast resistor for super-high-voltage devices Grant 8,981,484 - Sutardja , et al. March 17, 2 | 2015-03-17 |
| Phosphor and LED placement for white LED-based lamps Grant 8,970,101 - Sutardja , et al. March 3, 2 | 2015-03-03 |
| LED-based lamp with user-selectable color temperature Grant 8,947,013 - Sutardja , et al. February 3, 2 | 2015-02-03 |
| Current Balancing Circuits For Light-emitting-diode-based Illumination Systems App 20150022117 - Sutardja; Sehat ; et al. | 2015-01-22 |
| Apparatuses For Controlling Operation Of A Motor Of A Fan Assembly Based On An Induced Voltage Or A Back Electromotive Force App 20140354200 - Krishnamoorthy; Ravishanker ; et al. | 2014-12-04 |
| MOS device with low on-resistance Grant 8,901,648 - Sutardja , et al. December 2, 2 | 2014-12-02 |
| Systems And Methods For Adaptive Motor Speed Control App 20140333242 - Krishnamoorthy; Ravishanker ; et al. | 2014-11-13 |
| Current balancing circuits for light-emitting-diode-based illumination systems Grant 8,853,964 - Sutardja , et al. October 7, 2 | 2014-10-07 |
| Back-EMF detection for motor control Grant 8,853,985 - Krishnamoorthy , et al. October 7, 2 | 2014-10-07 |
| System And Method For Supplying Power At Startup App 20140268937 - Krishnamoorthy; Ravishanker ; et al. | 2014-09-18 |
| Apparatus and method for controlling speed of a fan via a first control module connected by a cable and/or conductors between a motor and a second control module Grant 8,807,956 - Krishnamoorthy , et al. August 19, 2 | 2014-08-19 |
| Systems and methods for adaptive torque adjustment and motor control Grant 8,791,664 - Krishnamoorthy , et al. July 29, 2 | 2014-07-29 |
| Voltage mode using pseudo current limit Grant 8,766,583 - Krishnamoorthy , et al. July 1, 2 | 2014-07-01 |
| Led-based Lamp With User-selectable Color Temperature App 20140159600 - Sutardja; Sehat ; et al. | 2014-06-12 |
| Light Emitting Diodes Generating White Light App 20140160725 - Sutardja; Sehat ; et al. | 2014-06-12 |
| Current Balancing Circuits For Light-emitting-diode-based Illumination Systems App 20140159595 - Sutardja; Sehat ; et al. | 2014-06-12 |
| Phosphor And Led Placement For White Led-based Lamps App 20140159596 - Sutardja; Sehat ; et al. | 2014-06-12 |
| High-voltage startup circuit Grant 8,742,735 - Krishnamoorthy , et al. June 3, 2 | 2014-06-03 |
| Reducing voltage stress in a flyback converter design Grant 8,711,584 - Zhang , et al. April 29, 2 | 2014-04-29 |
| Method And Apparatus To Reduce Overcurrent During The Startup Of A Switching Regulator App 20140112035 - SHU; Biing Long ; et al. | 2014-04-24 |
| Failure Prediction In A Rotating Device App 20140111218 - Krishnamoorthy; Ravishanker ; et al. | 2014-04-24 |
| Method And Apparatus For Windowless Bemf Detection App 20140111131 - Krishnamoorthy; Ravishanker | 2014-04-24 |
| Driving A Rotating Device Based On A Combination Of Speed Detection By A Sensor And Sensor-less Speed Detection App 20140097777 - Leong; Foo Leng ; et al. | 2014-04-10 |
| Lowest Power Mode For A Mobile Drive App 20140075229 - Krishnamoorthy; Ravishanker ; et al. | 2014-03-13 |
| Lowest power mode for a mobile drive Grant 8,582,227 - Krishnamoorthy , et al. November 12, 2 | 2013-11-12 |
| Multi-function feedback using an optocoupler Grant 8,520,415 - Krishnamoorthy , et al. August 27, 2 | 2013-08-27 |
| Motor spindle control system and method Grant 8,497,647 - Krishnamoorthy , et al. July 30, 2 | 2013-07-30 |
| Circuits and methods for multiple programmable memory using one-time programmable memory Grant 8,472,233 - Krishnamoorthy , et al. June 25, 2 | 2013-06-25 |
| Current Balancing Circuits For Light-emitting-diode-based Illumination Systems App 20130154510 - Sutardja; Sehat ; et al. | 2013-06-20 |
| Systems And Methods For Programming Of A Cooling Fan Arrangement App 20130094973 - Krishnamoorthy; Ravishanker ; et al. | 2013-04-18 |
| Method to eliminate current surge during spindle spin up Grant 8,405,332 - Krishnamoorthy , et al. March 26, 2 | 2013-03-26 |
| Voltage mode using pseudo current limit Grant 8,390,226 - Krishnamoorthy , et al. March 5, 2 | 2013-03-05 |
| Method And Apparatus For Triac Applications App 20130043726 - KRISHNAMOORTHY; Ravishanker ; et al. | 2013-02-21 |
| Isolated AC-DC converter with master controller on secondary side and slave controller on primary side Grant 8,374,004 - Sutardja , et al. February 12, 2 | 2013-02-12 |
| Ballast Resistor For Super-high-voltage Devices App 20120326234 - Sutardja; Sehat ; et al. | 2012-12-27 |
| Super-high-voltage Resistor On Silicon App 20120313692 - Sutardja; Sehat ; et al. | 2012-12-13 |
| Systems and methods for programming of a cooling fan via a serial port communication mode Grant 8,330,586 - Krishnamoorthy , et al. December 11, 2 | 2012-12-11 |
| High-Voltage Startup Circuit App 20120294051 - Krishnamoorthy; Ravishanker ; et al. | 2012-11-22 |
| Motor spindle control system and method Grant 8,314,581 - Krishnamoorthy , et al. November 20, 2 | 2012-11-20 |
| Hysteretic inductive switching regulator with power supply compensation Grant 8,310,389 - Chui , et al. November 13, 2 | 2012-11-13 |
| External disturbance detection system and method for two-phase motor control systems Grant 8,278,861 - Leong , et al. October 2, 2 | 2012-10-02 |
| Fan motor control systems Grant 8,277,198 - Krishnamoorthy , et al. October 2, 2 | 2012-10-02 |
| Motor speed control system and method without pulse-width modulation Grant 8,269,440 - Leong , et al. September 18, 2 | 2012-09-18 |
| External Disturbance Detection System And Method For Two-phase Motor Control Systems App 20120206072 - Leong; Foo Leng ; et al. | 2012-08-16 |
| Reducing Voltage Stress In A Flyback Converter Design App 20120163040 - Zhang; Hong Liang ; et al. | 2012-06-28 |
| Circuits and methods for multiple programmable memory using one-time programmable memory Grant 8,174,863 - Krishnamoorthy , et al. May 8, 2 | 2012-05-08 |
| External disturbance detection system and method for two-phase motor control systems Grant 8,164,285 - Leong , et al. April 24, 2 | 2012-04-24 |
| Back-emf Detection For Motor Control App 20120068649 - KRISHNAMOORTHY; Ravishanker ; et al. | 2012-03-22 |
| Hysteretic inductive switching regulator with power supply compensation Grant 8,129,969 - Chui , et al. March 6, 2 | 2012-03-06 |
| Fan Motor Control Systems App 20120007531 - Krishnamoorthy; Ravishanker ; et al. | 2012-01-12 |
| Method and apparatus for initializing operation of a disk drive Grant 8,044,616 - Krishnamoorthy , et al. October 25, 2 | 2011-10-25 |
| Systems And Methods For Adaptive Torque Adjustment And Motor Control App 20110181232 - Krishnamoorthy; Ravishanker ; et al. | 2011-07-28 |
| Isolated AC-DC Converter with Master Controller on Secondary Side and Slave Controller on Primary Side App 20110038184 - Sutardja; Sehat ; et al. | 2011-02-17 |
| Motor spindle control system and method Grant 7,863,842 - Krishnamoorthy , et al. January 4, 2 | 2011-01-04 |
| Self configuring voltage regulators Grant 7,859,244 - Krishnamoorthy , et al. December 28, 2 | 2010-12-28 |
| Motor spindle control system and method Grant 7,808,193 - Krishnamoorthy , et al. October 5, 2 | 2010-10-05 |
| Systems And Methods For Programming Of A Cooling Fan Via A Serial Port Communication Mode App 20100215509 - Krishnamoorthy; Ravishanker ; et al. | 2010-08-26 |
| Short circuit protection circuits and methods Grant 7,755,432 - Krishnamoorthy July 13, 2 | 2010-07-13 |
| Motor Speed Control System And Method Without Pulse-width Modulation App 20100134055 - Leong; Foo Leng ; et al. | 2010-06-03 |
| Motor Control System App 20100119386 - Krishnamoorthy; Ravishanker ; et al. | 2010-05-13 |
| External Disturbance Detection System And Method For Two-phase Motor Control Systems App 20100117571 - Leong; Foo Leng ; et al. | 2010-05-13 |
| Mos Device With Low On-resistance App 20090250751 - Sutardja; Sehat ; et al. | 2009-10-08 |
| Lowest Power Mode For A Mobile Drive App 20090024860 - Krishnamoorthy; Ravishanker ; et al. | 2009-01-22 |
| Method and apparatus for initializing operation of a disk drive Grant 7,468,590 - Krishnamoorthy , et al. December 23, 2 | 2008-12-23 |
| System for controlling rotation of a disk drive Grant 7,453,221 - Shinichiro , et al. November 18, 2 | 2008-11-18 |
| Lowest power mode for a mobile drive Grant 7,443,627 - Krishnamoorthy , et al. October 28, 2 | 2008-10-28 |
| Geometry Of Mos Device With Low On-resistance App 20080157195 - Sutardja; Sehat ; et al. | 2008-07-03 |
| Method and apparatus for initializing operation of a disk drive Grant 7,332,883 - Krishnamoorthy , et al. February 19, 2 | 2008-02-19 |
| Motor spindle control system and method Grant 7,274,162 - Krishnamoorthy , et al. September 25, 2 | 2007-09-25 |
| Method and apparatus for controlling a disk drive under a power loss condition Grant 7,161,757 - Krishnamoorthy , et al. January 9, 2 | 2007-01-09 |
| Method of controlling the speed of an arm of a disk drive Grant 6,700,344 - Krishnamoorthy , et al. March 2, 2 | 2004-03-02 |
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