Ravishanker Krishnamoorthy

Person

Rivervale Crest, SG

People

Patents Grantslast 30 patents

Information Patent Grant
Active clamp for motor driver
- Patent number 9,876,450
- Issue date Jan 23, 2018
- Marvell World Trade, Ltd.
- Yichao Wang
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Failure prediction in a rotating device
- Patent number 9,863,852
- Issue date Jan 9, 2018
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Controlled inductive sense system
- Patent number 9,787,227
- Issue date Oct 10, 2017
- Marvell International Ltd.
- Yichao Wang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Adaptive brake timing for a brushless motor
- Patent number 9,748,878
- Issue date Aug 29, 2017
- Marvell International, Ltd.
- Edy Susanto
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Apparatuses for controlling operation of a motor of a fan assembly...
- Patent number 9,695,832
- Issue date Jul 4, 2017
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Method and apparatus for windowless BEMF detection
- Patent number 9,571,018
- Issue date Feb 14, 2017
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current balancing for light-emitting-diode-based illumination systems
- Patent number 9,554,441
- Issue date Jan 24, 2017
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Grant
Method to eliminate current surge during spindle spin up
- Patent number 9,543,863
- Issue date Jan 10, 2017
- Marvell International Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
System and method for supplying power at startup
- Patent number 9,502,957
- Issue date Nov 22, 2016
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Geometry of MOS device with low on-resistance
- Patent number 9,466,596
- Issue date Oct 11, 2016
- Marvell World Trade Ltd.
- Sehat Sutardja
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Systems and methods for adaptive motor speed control
- Patent number 9,425,721
- Issue date Aug 23, 2016
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Light emitting diodes generating white light
- Patent number 9,408,274
- Issue date Aug 2, 2016
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Grant
Systems and methods for programming of a cooling fan arrangement
- Patent number 9,334,870
- Issue date May 10, 2016
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Lowest power mode for a mobile drive
- Patent number 9,329,660
- Issue date May 3, 2016
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- G11 - INFORMATION STORAGE
Information Patent Grant
Method and apparatus for TRIAC applications
- Patent number 9,258,863
- Issue date Feb 9, 2016
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Current balancing circuits for light-emitting-diode-based illuminat...
- Patent number 9,241,385
- Issue date Jan 19, 2016
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Grant
Method and apparatus to reduce overcurrent during the startup of a...
- Patent number 9,197,124
- Issue date Nov 24, 2015
- Marvell World Trade Ltd.
- Biing Long Shu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current balancing circuits for light-emitting-diode-based illuminat...
- Patent number 9,055,647
- Issue date Jun 9, 2015
- Marvell World Trade Ltd.
- Sehat Sutardja
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Ballast resistor for super-high-voltage devices
- Patent number 8,981,484
- Issue date Mar 17, 2015
- Marvell World Trade Ltd.
- Sehat Sutardja
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Phosphor and LED placement for white LED-based lamps
- Patent number 8,970,101
- Issue date Mar 3, 2015
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Grant
LED-based lamp with user-selectable color temperature
- Patent number 8,947,013
- Issue date Feb 3, 2015
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Grant
MOS device with low on-resistance
- Patent number 8,901,648
- Issue date Dec 2, 2014
- Marvell World Trade Ltd.
- Sehat Sutardja
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Back-EMF detection for motor control
- Patent number 8,853,985
- Issue date Oct 7, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Current balancing circuits for light-emitting-diode-based illuminat...
- Patent number 8,853,964
- Issue date Oct 7, 2014
- Marvell World Trade Ltd.
- Sehat Sutardja
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus and method for controlling speed of a fan via a first con...
- Patent number 8,807,956
- Issue date Aug 19, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Systems and methods for adaptive torque adjustment and motor control
- Patent number 8,791,664
- Issue date Jul 29, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Voltage mode using pseudo current limit
- Patent number 8,766,583
- Issue date Jul 1, 2014
- Marvell International Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
High-voltage startup circuit
- Patent number 8,742,735
- Issue date Jun 3, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Reducing voltage stress in a flyback converter design
- Patent number 8,711,584
- Issue date Apr 29, 2014
- Marvell World Trade Ltd.
- Hong Liang Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Lowest power mode for a mobile drive
- Patent number 8,582,227
- Issue date Nov 12, 2013
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- G11 - INFORMATION STORAGE

Patents Applicationslast 30 patents

Information Patent Application
CURRENT BALANCING FOR LIGHT-EMITTING-DIODE-BASED ILLUMINATION SYSTEMS
- Publication number 20150271889
- Publication date Sep 24, 2015
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Application
ACTIVE CLAMP FOR MOTOR DRIVER
- Publication number 20150214874
- Publication date Jul 30, 2015
- Marvell World Trade, Ltd.
- Yichao WANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
BALLAST RESISTOR FOR SUPER-HIGH-VOLTAGE DEVICES
- Publication number 20150187754
- Publication date Jul 2, 2015
- Marvell World Trade Ltd.
- Sehat Sutardja
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINAT...
- Publication number 20150022117
- Publication date Jan 22, 2015
- Marvell World Trade Ltd.
- Sehat Sutardja
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
APPARATUSES FOR CONTROLLING OPERATION OF A MOTOR OF A FAN ASSEMBLY...
- Publication number 20140354200
- Publication date Dec 4, 2014
- Ravishanker Krishnamoorthy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
SYSTEMS AND METHODS FOR ADAPTIVE MOTOR SPEED CONTROL
- Publication number 20140333242
- Publication date Nov 13, 2014
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYSTEM AND METHOD FOR SUPPLYING POWER AT STARTUP
- Publication number 20140268937
- Publication date Sep 18, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
LIGHT EMITTING DIODES GENERATING WHITE LIGHT
- Publication number 20140160725
- Publication date Jun 12, 2014
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Application
PHOSPHOR AND LED PLACEMENT FOR WHITE LED-BASED LAMPS
- Publication number 20140159596
- Publication date Jun 12, 2014
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Application
LED-BASED LAMP WITH USER-SELECTABLE COLOR TEMPERATURE
- Publication number 20140159600
- Publication date Jun 12, 2014
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Application
CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINAT...
- Publication number 20140159595
- Publication date Jun 12, 2014
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Application
FAILURE PREDICTION IN A ROTATING DEVICE
- Publication number 20140111218
- Publication date Apr 24, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
METHOD AND APPARATUS FOR WINDOWLESS BEMF DETECTION
- Publication number 20140111131
- Publication date Apr 24, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
METHOD AND APPARATUS TO REDUCE OVERCURRENT DURING THE STARTUP OF A...
- Publication number 20140112035
- Publication date Apr 24, 2014
- Marvell World Trade Ltd.
- Biing Long SHU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DRIVING A ROTATING DEVICE BASED ON A COMBINATION OF SPEED DETECTION...
- Publication number 20140097777
- Publication date Apr 10, 2014
- Marvell World Trade Ltd.
- Foo Leng Leong
- G01 - MEASURING TESTING
Information Patent Application
LOWEST POWER MODE FOR A MOBILE DRIVE
- Publication number 20140075229
- Publication date Mar 13, 2014
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINAT...
- Publication number 20130154510
- Publication date Jun 20, 2013
- Marvell World Trade Ltd.
- Sehat Sutardja
- F21 - LIGHTING
Information Patent Application
SYSTEMS AND METHODS FOR PROGRAMMING OF A COOLING FAN ARRANGEMENT
- Publication number 20130094973
- Publication date Apr 18, 2013
- Marvell World Trade Ltd.
- Ravishanker Krishnamoorthy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
METHOD AND APPARATUS FOR TRIAC APPLICATIONS
- Publication number 20130043726
- Publication date Feb 21, 2013
- Ravishanker KRISHNAMOORTHY
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
BALLAST RESISTOR FOR SUPER-HIGH-VOLTAGE DEVICES
- Publication number 20120326234
- Publication date Dec 27, 2012
- Sehat Sutardja
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SUPER-HIGH-VOLTAGE RESISTOR ON SILICON
- Publication number 20120313692
- Publication date Dec 13, 2012
- Sehat Sutardja
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
High-Voltage Startup Circuit
- Publication number 20120294051
- Publication date Nov 22, 2012
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
EXTERNAL DISTURBANCE DETECTION SYSTEM AND METHOD FOR TWO-PHASE MOTO...
- Publication number 20120206072
- Publication date Aug 16, 2012
- Foo Leng Leong
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
REDUCING VOLTAGE STRESS IN A FLYBACK CONVERTER DESIGN
- Publication number 20120163040
- Publication date Jun 28, 2012
- Hong Liang Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
BACK-EMF DETECTION FOR MOTOR CONTROL
- Publication number 20120068649
- Publication date Mar 22, 2012
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
FAN MOTOR CONTROL SYSTEMS
- Publication number 20120007531
- Publication date Jan 12, 2012
- Ravishanker Krishnamoorthy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
SYSTEMS AND METHODS FOR ADAPTIVE TORQUE ADJUSTMENT AND MOTOR CONTROL
- Publication number 20110181232
- Publication date Jul 28, 2011
- Ravishanker Krishnamoorthy
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Isolated AC-DC Converter with Master Controller on Secondary Side a...
- Publication number 20110038184
- Publication date Feb 17, 2011
- Sehat Sutardja
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SYSTEMS AND METHODS FOR PROGRAMMING OF A COOLING FAN VIA A SERIAL P...
- Publication number 20100215509
- Publication date Aug 26, 2010
- Ravishanker Krishnamoorthy
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
MOTOR SPEED CONTROL SYSTEM AND METHOD WITHOUT PULSE-WIDTH MODULATION
- Publication number 20100134055
- Publication date Jun 3, 2010
- Foo Leng Leong
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Ravishanker Krishnamoorthy

Person

Patents Grantslast 30 patents

Active clamp for motor driver

Failure prediction in a rotating device

Controlled inductive sense system

Adaptive brake timing for a brushless motor

Apparatuses for controlling operation of a motor of a fan assembly...

Method and apparatus for windowless BEMF detection

Current balancing for light-emitting-diode-based illumination systems

Method to eliminate current surge during spindle spin up

System and method for supplying power at startup

Geometry of MOS device with low on-resistance

Systems and methods for adaptive motor speed control

Light emitting diodes generating white light

Systems and methods for programming of a cooling fan arrangement

Lowest power mode for a mobile drive

Method and apparatus for TRIAC applications

Current balancing circuits for light-emitting-diode-based illuminat...

Method and apparatus to reduce overcurrent during the startup of a...

Current balancing circuits for light-emitting-diode-based illuminat...

Ballast resistor for super-high-voltage devices

Phosphor and LED placement for white LED-based lamps

LED-based lamp with user-selectable color temperature

MOS device with low on-resistance

Back-EMF detection for motor control

Current balancing circuits for light-emitting-diode-based illuminat...

Apparatus and method for controlling speed of a fan via a first con...

Systems and methods for adaptive torque adjustment and motor control

Voltage mode using pseudo current limit

High-voltage startup circuit

Reducing voltage stress in a flyback converter design

Lowest power mode for a mobile drive

Patents Applicationslast 30 patents

CURRENT BALANCING FOR LIGHT-EMITTING-DIODE-BASED ILLUMINATION SYSTEMS

ACTIVE CLAMP FOR MOTOR DRIVER

BALLAST RESISTOR FOR SUPER-HIGH-VOLTAGE DEVICES

CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINAT...

APPARATUSES FOR CONTROLLING OPERATION OF A MOTOR OF A FAN ASSEMBLY...

SYSTEMS AND METHODS FOR ADAPTIVE MOTOR SPEED CONTROL

SYSTEM AND METHOD FOR SUPPLYING POWER AT STARTUP

LIGHT EMITTING DIODES GENERATING WHITE LIGHT

PHOSPHOR AND LED PLACEMENT FOR WHITE LED-BASED LAMPS

LED-BASED LAMP WITH USER-SELECTABLE COLOR TEMPERATURE

CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINAT...

FAILURE PREDICTION IN A ROTATING DEVICE

METHOD AND APPARATUS FOR WINDOWLESS BEMF DETECTION

METHOD AND APPARATUS TO REDUCE OVERCURRENT DURING THE STARTUP OF A...

DRIVING A ROTATING DEVICE BASED ON A COMBINATION OF SPEED DETECTION...

LOWEST POWER MODE FOR A MOBILE DRIVE

CURRENT BALANCING CIRCUITS FOR LIGHT-EMITTING-DIODE-BASED ILLUMINAT...

SYSTEMS AND METHODS FOR PROGRAMMING OF A COOLING FAN ARRANGEMENT

METHOD AND APPARATUS FOR TRIAC APPLICATIONS

BALLAST RESISTOR FOR SUPER-HIGH-VOLTAGE DEVICES

SUPER-HIGH-VOLTAGE RESISTOR ON SILICON

High-Voltage Startup Circuit

EXTERNAL DISTURBANCE DETECTION SYSTEM AND METHOD FOR TWO-PHASE MOTO...

REDUCING VOLTAGE STRESS IN A FLYBACK CONVERTER DESIGN

BACK-EMF DETECTION FOR MOTOR CONTROL

FAN MOTOR CONTROL SYSTEMS

SYSTEMS AND METHODS FOR ADAPTIVE TORQUE ADJUSTMENT AND MOTOR CONTROL

Isolated AC-DC Converter with Master Controller on Secondary Side a...

SYSTEMS AND METHODS FOR PROGRAMMING OF A COOLING FAN VIA A SERIAL P...

MOTOR SPEED CONTROL SYSTEM AND METHOD WITHOUT PULSE-WIDTH MODULATION