Inventor

Chandra S. Namuduri

Inventor

Troy, MI, US

Overview

1993–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 190 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

Y02Tprimary

Y02TClimate change mitigation technologies related to transportation12%

B60KArrangement or mounting of propulsion units or of transmissions in vehicles7%

F02NStarting of combustion engines7%

H02PControl or regulation of electric motors, electric generators or dynamo-electric converters6%

B60LPropulsion of electrically-propelled vehicles6%

H02KDynamo-electric machines6%

B60WConjoint control of vehicle sub-units of different type or different function5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests4%

F16FSprings4%

F02DControlling combustion engines3%

PatentTitleYear

11,071,225Smart high-voltage relay2021 11,015,564Starter for an internal combustion engine2021 10,998,840Electric drive system with reconfigurable machine windings2021 10,961,971System and method for reducing cold start emissions of a motor vehicle2021 10,940,771Optimized operation of electric propulsion system having reconfigurable series/parallel voltage source2021 10,917,030Electric drive system with reconfigurable machine windings2021 10,900,458Apparatus and method for control of powertrain stop position2021 10,895,237Electric starter system with latch mechanism for pinion pre-engagement control2021 10,886,817On-axis brushless starter assembly2021 10,854,933Battery pack voltage-switching systems and control logic for multi-pack electric-drive motor vehicles2020 10,815,954Starter for an internal combustion engine2020 10,724,491Brushless starter system with pinion pre-engagement control2020 10,675,991Methods for reconfigurable battery charger control2020 10,677,212Method and apparatus for controlled stopping of internal combustion engine2020 10,665,398Direct current solid-state switch2020 10,655,583Optimum current drive for a actuator control2020 10,654,370Apparatus and method for flexible DC fast charging of an electrified vehicle2020 10,632,862Electric power system for an autonomous vehicle2020 10,622,875Interior permanent magnet electric machine2020 10,605,217Vehicle engine starter control systems and methods2020 10,597,073Vehicles and steering systems for vehicles providing haptic feedback2020 10,574,116Starter including a switched reluctance electric motor2020 10,544,772Bus voltage stabilization in powertrain having electric starter system with polyphase brushless starter motor2020 10,511,213Method and apparatus for determining magnetic flux and magnetic force in a solenoid assembly2019 10,505,415Permanent magnet electric machine2019 10,487,791Temperature control strategy for electric starter system with polyphase brushless starter motor2019 10,480,674Electromagnetic actuator structure2019 10,480,476Starter system and method of control2019 10,479,220Hybrid powertrain with dual energy storage devices2019 10,471,820Hybrid drivetrain2019 10,473,081Powertrain with AC brushless starter and sensor/sensorless control method2019 10,436,167Starter system and method of control2019 10,432,130Electric powertrain and a method of operating the same2019 10,424,429Long stroke linear solenoid2019 10,408,184Brushless electric starter system with closed-loop speed synchronization control methodology2019 10,369,896Apparatus and method for flexible DC fast charging of an electrified vehicle2019 10,330,070Method and apparatus for operating a starter for an internal combustion engine2019 10,293,805Generator system and control method2019 10,293,804Hybrid vehicle engine starter systems and methods2019 10,284,036Electric machine for hybrid powertrain with engine belt drive2019 10,259,448Hybrid vehicle propulsion systems and methods2019 10,207,699Hybrid vehicle propulsion systems and methods2019 10,205,358Electric machine for a vehicle powertrain and the electric machine includes a permanent magnet2019 10,190,561System and method for rapid engine start2019 10,190,559Hybrid vehicle engine starter control systems and methods2019 10,189,470Hybrid vehicle propulsion systems and methods2019 10,189,469Method of controlling a powertrain of a vehicle2019 10,190,526Alternating current drive for actuators2019 10,184,442Permanent magnet electric machine2019 10,110,103Electric drive system enhancement using a DC-DC converter2018 10,101,396Detection of current sensor malfunction2018 10,060,399Method and apparatus for optimum drive signal control of an electromagnetically-activated actuator2018 10,040,649Electrodynamic apparatus and method for separating non-ferrous conductive blanks2018 10,044,297Method and apparatus for controlling an electric motor of a cooling fan2018 10,036,359Hybrid vehicle engine starter control systems and methods2018 10,017,044Hybrid powertrain system2018 10,008,342Method and apparatus for supplying regulated electric power2018 9,979,336Method and apparatus for generator control2018 9,973,028Apparatus and method for grid-to-vehicle battery charging2018 9,973,134Electrical system with reverse current protection circuit2018 9,932,947Actuator with residual magnetic hysteresis reset2018 9,926,146'Magnetodynamic apparatus and method for separating non-ferrous conductive blanks'2018 9,925,889'Electric machine for hybrid powertrain with dual voltage power system'2018 9,914,599'Systems, processes and apparatuses for automated handling of non-ferrous metal objects'2018 9,911,249'Fail operational power system diagnostics'2018 9,882,521'Apparatus and methods of controlling electric drive with reconfigurable winding'2018 9,868,410'Apparatus and method for electrical power management in a vehicle system'2018 9,866,157'Method and apparatus for a position sensor for a transmission integrated synchronous motor'2018 9,863,355'Magnetic force based actuator control'2018 9,803,608'Apparatus and method for vehicle voltage stabilization'2017 9,777,686'Actuator motion control'2017 9,777,660'Parameter estimation in an actuator'2017 9,732,736'System and method for controlling an active material actuator'2017 9,735,634'Split pole spoke type PM machine with enclosed magnets'2017 9,726,100'Actuator with deadbeat control'2017 9,726,099'Actuator with feed forward control'2017 9,694,769'Smart power distribution unit'2017 9,692,266'Spoke-type PM machine with bridge'2017 9,664,159'Parameter estimation in an actuator'2017 9,664,158'Actuator with integrated driver'2017 9,657,699'Actuator with integrated flux sensor'2017 9,657,705'Powertrain for a vehicle and an electromechanical apparatus coupleable to an engine'2017 9,624,883'Smart actuator for plug and play'2017 9,621,099'Method for switching between a full winding mode and a half winding mode in a three-phase machine'2017 9,610,845'Powertrain for a vehicle'2017 9,601,812'High-voltage contactor switching systems and methods'2017 9,597,979'Method of controlling regeneration and boost functions of a hybrid powertrain'2017 9,586,575'Powertrain for a vehicle'2017 9,573,454'Powertrain for a vehicle and a method of assembling the powertrain'2017 9,522,600'Motor generator unit with multiplexed output'2016 9,481,357'Hybrid powertrain with mechatronic actuator assembly and method of controlling the same'2016 9,481,236'Powertrain for a vehicle'2016 9,475,481'Powertrain for a vehicle'2016 9,452,672'Vehicle powertrain'2016 9,440,600'Fail operational power system with multiple energy storage devices'2016 9,440,654'Hybrid vehicle and method of controlling a hybrid vehicle with mode selection based on look ahead data'2016 9,413,215'Transmission assembly with integrated motor position sensor'2016 9,388,722'Voltage control system for heating a selective catalyst reduction device'2016 9,387,766'Vehicle with selectively enabled boost converter'2016 9,370,992'Powertrain for a vehicle'2016 9,346,345'Shape memory alloy active hatch vent'2016 9,302,575'Powertrain for a vehicle and a method of assembling the powertrain'2016 9,216,707'Motor generator unit with multiplexed output'2015 9,186,963'Method for reducing glare from light sources through windscreens with intensity control film'2015 9,184,582'Fail operational power system with single energy storage'2015 9,153,974'Battery parallel balancing circuit'2015 9,145,935'Brake mechanism for a hybrid transmission'2015 9,118,210'Electrical system and method for a hybrid-electric vehicle'2015 9,108,633'Hybrid powertrain and method of controlling same'2015 9,021,793'Method for converting constituent gases in an internal combustion engine exhaust gas mixture and a vehicle incorporating the same'2015 8,901,934'Diagnosis of HEV/EV battery disconnect system'2014 8,870,144'Active material adaptive object holders'2014 8,855,856'Vehicle roll control method using controllable friction force of MR dampers'2014 8,821,224'Shape memory alloy active hatch vent'2014 8,816,556'Optimized electric machine for smart actuators'2014 8,742,615'Method and apparatus for electric power management in a vehicle'2014 8,664,822'Bi-permanent magnets in synchronous machines'2014 8,614,518'Self-powered vehicle sensor systems'2013 8,606,447'Method and apparatus to operate a powertrain system including an electric machine having a disconnected high-voltage battery'2013 8,602,419'Temperature adaptive radial shaft seal assemblies using shape memory alloy elements'2013 8,498,773'Stability enhancing system and method for enhancing the stability of a vehicle'2013 8,497,664'High efficiency multi-phase generator'2013 8,457,841'Suspension system with optimized damping response'2013 8,448,952'Vehicle with active-regenerative suspension'2013 8,439,173'Methods and apparatus for a suspension system with progressive resistance'2013 8,436,571'Actuator system including an active material'2013 8,428,819'Suspension system with optimized damper response for wide range of events'2013 8,392,069'Method for managing faults in a magneto-rheological hydraulic power steering system'2013 8,314,578'Control of an alternator-starter for a hybrid electric vehicle having a disconnected high-voltage battery'2012 8,272,214'Shape memory alloy cables'2012 8,253,281'Energy harvesting apparatus incorporated into shock absorber'2012 8,174,377'Suspension height sensor'2012 8,175,770'Height sensing system for a vehicular suspension assembly'2012 8,160,774'Vehicular actuator system'2012 8,150,579'Pump speed command generation algorithm for magnetorheological power steering coupling'2012 8,143,766'Harvesting energy from vehicular vibrations using piezoelectric devices'2012 8,089,191'Electric machine and control method'2012 8,064,227'Rectifying circuit for a multiphase electric machine'2011 8,063,498'Harvesting energy from vehicular vibrations'2011 8,055,408'High bandwidth control of magnetic ride control system'2011 8,022,710'Methods for common mode voltage-based AC fault detection, verification and/or identification'2011 8,020,650'Control of a starter-alternator during a high-voltage battery fault condition'2011 7,973,504'Electric power steering control'2011 7,956,797'System and method for measuring a relative distance between vehicle components using ultra-wideband techniques'2011 7,941,256'Method for vehicle suspension wear prediction and indication'2011 7,936,113'Harvesting energy from vehicular vibrations using piezoelectric devices'2011 7,919,949'High efficiency generator'2011 7,900,755'Bi-fold valve-type magnetorheological fluid energy absorbing device'2011 7,797,096'Torque estimation of engine driven generator'2010 7,791,245'Optimized electric machine for smart actuators'2010 7,786,687'Apparatus and method for control of an active front steering (AFS) system'2010 7,686,143'Magnetorheological device and system and method for using the same'2010 7,649,360'Apparatus and systems for common mode voltage-based AC fault detection, verification and/or identification'2010 7,624,850'Damping device having controllable resistive force'2009 7,571,040'Method and apparatus for controlling a magneto-rheological power steering coupling'2009 7,422,093'Magneto-rheological coupling'2008 7,420,350'Methods and apparatus for an active front steering actuator'2008 7,401,834'Child seat anchor assembly and methods of use'2008 7,354,056'Trailer stability control apparatus'2008 7,334,670'Torque vectoring differential for controlling vehicle stability'2008 7,322,895'Automotive accessory drive system'2008 7,303,056'Magnetorheological device and system and method for using the same'2007 7,302,329'Apparatus, system and method for magnetorheological clutch diagnostics'2007 7,296,543'Engine coolant pump drive system and apparatus for a vehicle'2007 7,293,836'Seat assemblies including a seat stroking device and methods of use'2007 7,290,525'Methods and apparatus for an engine speed controller using generator torque load'2007 7,275,750'Roll control system, device and method for controlling vehicle stability'2007 7,257,947'Power steering system'2007 7,240,485'Power steering system'2007 7,232,016'Fluid damper having continuously variable damping response'2007 7,225,905'Magnetorheological fluid damper'2007 7,135,784'Fast torque control of a belted alternator starter'2006 7,051,849'Magnetorheological fluid damper'2006 7,009,365'Systems and methods for control of vehicle electrical generator'2006 6,983,832'Impact energy absorber and process'2006 6,944,920'Electrostatically releasable fastening system and method of use'2005 6,920,753'Magneto-electrohydraulic power steering system'2005 6,909,201'Dual voltage architecture for automotive electrical systems'2005 6,876,177'Load dump transient voltage controller'2005 6,838,852'Plug and play electric machine'2005 6,709,035'Extendible bumper system and method of control'2004 6,641,166'Extendable and retractable knee bolster system'2003 6,622,995'Hydraulic mount with magnetorheological fluid'2003 6,498,451'Torque ripple free electric power steering'2002 6,498,449'Low ripple torque control of a permanent magnet motor without using current sensors'2002 6,390,252'Magnetorheological fluid damper with optimum damping'2002 6,279,701'Magnetorheological fluid damper with multiple annular flow gaps'2001 6,157,095'Control circuit for inductive loads'2000 5,291,106'Single current regulator for controlled motoring and braking of a DC-fed electric motor'1994 5,264,775'Pulse width modulation control apparatus and method'1993

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1993–2008Patents assigned to GEN MOTORS CORP (18)· patent assignee history

1993–2002Based in Sterling Heights, MI, US· patent location history

2002–2021Based in Troy, MI, US· patent location history

2007–2016Patents assigned to GM GLOBAL TECH OPERATIONS INC (69)· patent assignee history

2011–2018Patents assigned to NAMUDURI CHANDRA S (32)· patent assignee history

2012–2018Patents assigned to GOPALAKRISHNAN SURESH (8)· patent assignee history

2016–2021Patents assigned to GM GLOBAL TECH OPERATIONS LLC (97)· patent assignee history

2019Based in Warren, MI, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GM GLOBAL TECH OPERATIONS LLC	97	2016–2021
GM GLOBAL TECH OPERATIONS INC	69	2007–2016
NAMUDURI CHANDRA Sself	32	2011–2018
GEN MOTORS CORP	18	1993–2008
GOPALAKRISHNAN SURESH	8	2012–2018

Locations

Location	Patents	Span
Troy, MI, US	184	2002–2021
Sterling Heights, MI, US	5	1993–2002
Warren, MI, US	1	2019