Inventor · disambiguated record
Balasubramanian Lakshmanan
Also filed as: LAKSHMANAN BALASUBRAMANIAN
44 granted patents·15 pending applications·98 citations·filing 2000–2021
96Inventor score
Files withGM GLOBAL TECH OPERATIONS LLC26GM GLOBAL TECH OPERATIONS INC11GANAPATHY SRIRAM3SINHA PUNEET K3ARTHUR DAVID A1
Top patents by PatentIndex Score
59 records- 0194US8450020B2In-vehicle algorithm for fuel cell stack health quantificationSINHA PUNEET K·Filed 2011·Granted May 28, 2013·35 cites·20 claims
- 0287US8232014B2Fuel cell operational methods for hydrogen addition after shutdownARTHUR DAVID A·Filed 2009·Granted Jul 31, 2012·10 cites·35 claims
- 0387US8214174B2Algorithm for online adaptive polarization curve estimation of a fuel cell stackGANAPATHY SRIRAM·Filed 2007·Granted Jul 3, 2012·9 cites·27 claims
- 0479US10680266B2Method of manufacturing an integrated water vapor transfer device and fuel cell-IIGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Jun 9, 2020·1 cites·27 claims
- 0579US9099703B2Fast MEA break-in and voltage recoveryRAPAPORT PINKHAS A·Filed 2012·Granted Aug 4, 2015·4 cites·20 claims
- 0678US9806356B2Systems and methods for controlling oxygen concentration in a cathode of a fuel cell systemGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Oct 31, 2017·2 cites·12 claims
- 0775US8574790B2Fuel cell electrodes with graded properties and method of makingSINHA PUNEET K·Filed 2010·Granted Nov 5, 2013·3 cites·7 claims
- 0875US6517963B2Carbon monoxide filterPLUG POWER INC·Filed 2000·Granted Feb 11, 2003·13 cites·31 claims
- 0974US10522859B2Dynamic low-power control of cell voltage in a fuel cell stack during low-power operating modesGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Dec 31, 2019·1 cites·14 claims
- 1074US8192879B2Method for maximum net power calculation for fuel cell system based on online polarization curve estimationSALVADOR JOHN P·Filed 2008·Granted Jun 5, 2012·3 cites·20 claims
- 1174US7993787B2Method for fast and reliable fuel cell system start-upsGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Aug 9, 2011·2 cites·22 claims
- 1273US9437889B2Powering a fuel cell stack during standbyMOSES ROBERT J·Filed 2012·Granted Sep 6, 2016·3 cites·19 claims
- 1372US7968240B2System and method for shorting a fuel cell stackGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted Jun 28, 2011·2 cites·8 claims
- 1472US7807308B2Fuel cell system and start-up methodGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Oct 5, 2010·2 cites·5 claims
- 1570US8771895B2Online anode pressure bias to maximize bleed velocity while meeting emission constraintSINHA MANISH·Filed 2010·Granted Jul 8, 2014·1 cites·20 claims
- 1669US12315977B2Shock-force mitigation systems and methods for electrochemical fuel cell stacksGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted May 27, 2025·0 cites·20 claims
- 1769US9034530B2Fuel cell stack used as coolant heaterLEBZELTER DEREK R·Filed 2008·Granted May 19, 2015·2 cites·21 claims
- 1868US8088525B2Online low performing cell (LPC) prediction and detection of fuel cell systemGANAPATHY SRIRAM·Filed 2008·Granted Jan 3, 2012·2 cites·20 claims
- 1967US9368817B2In-situ fuel cell stack reconditioningFOLMSBEE DANIEL T·Filed 2009·Granted Jun 14, 2016·2 cites·17 claims
- 2064US9368816B2Shutdown strategy to avoid carbon corrosion due to slow hydrogen/air intrusion ratesGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Jun 14, 2016·0 cites·19 claims
- 2164US8580445B2Shutdown strategy to avoid carbon corrosion due to slow hydrogen/air intrusion ratesGRESZLER THOMAS A·Filed 2008·Granted Nov 12, 2013·1 cites·14 claims
- 2263US2011143241A1Fuel cell operational methods for oxygen depletion at shutdownGM GLOBAL TECH OPERATIONS INC·Filed 2009·Application pending·0 cites
- 2362US2018131015A1Low Temperature Atmospheric Pressure Atomic Layer Deposition (ALD) of Graphene on Stainless Steel Substrates as BPP CoatingGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Application pending·0 cites
- 2461US10522855B2Method for creating an oxygen depleted gas in a fuel cell systemGM GLOBAL TECH OPERATIONS LLC·Filed 2015·Granted Dec 31, 2019·0 cites·13 claims
- 2560US11872909B2Method and apparatus for monitoring a fuel cellGM GLOBAL TECH OPERATIONS LLC·Filed 2021·Granted Jan 16, 2024·0 cites·18 claims
- 2657US2016365585A1Low Temperature Atmospheric Pressure Atomic Layer Deposition (ALD) of Graphene on Stainless Steel Substrates as BPP CoatingGM GLOBAL TECH OPERATIONS LLC·Filed 2015·Application pending·0 cites
- 2754US10236517B2Method for manufacturing and cleaning a stainless steel fuel cell bipolar plateGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Mar 19, 2019·0 cites·4 claims
- 2854US9755244B2Conductive thin film for carbon corrosion protectionGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted Sep 5, 2017·0 cites·19 claims
- 2954US9647279B2Systems and methods for mitigating carbon corrosion in a fuel cell systemGM GLOBAL TECH OPERATIONS LLC·Filed 2014·Granted May 9, 2017·0 cites·9 claims
- 3054US2022049367A1Hybrid bipolar plate and method of making the sameOHMIUM INTERNATIONAL INC·Filed 2021·Application pending·0 cites
- 3153US8722264B2Algorithm for stack current controller based on polarization curve estimation of a fuel cell stackGANAPATHY SRIRAM·Filed 2008·Granted May 13, 2014·0 cites·19 claims
- 3252US2010035090A1Off-state degradation prevention in a fuel cell without on-state losses using self controlled elementGM GLOBAL TECH OPERATIONS INC·Filed 2008·Application pending·0 cites
- 3352US2009263679A1Shutdown operations for an unsealed cathode fuel cell systemGM GLOBAL TECH OPERATIONS INC·Filed 2008·Application pending·0 cites
- 3451US8900767B2Algorithm for in-situ quantification of PEMFC membrane health over its lifeSINHA PUNEET K·Filed 2011·Granted Dec 2, 2014·0 cites·20 claims
- 3550US10158128B2Fuel cell stack break-in procedures and break-in conditioning systemsGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Dec 18, 2018·0 cites·20 claims
- 3650US8855942B2Anode bleed control strategy for improved water management and hydrogen utilizationGADE PRASAD·Filed 2007·Granted Oct 7, 2014·0 cites·15 claims
- 3749US10193173B2Electrochemical hydrogen sensor for global/local hydrogen starvation detection in PEM fuel cellsGM GLOBAL TECH OPERATIONS LLC·Filed 2015·Granted Jan 29, 2019·0 cites·20 claims
- 3849US7955744B2Method for fuel cell start-up with uniform hydrogen flowGM GLOBAL TECH OPERATIONS INC·Filed 2007·Granted Jun 7, 2011·0 cites·9 claims
- 3948US10329150B2Fuel cell system and method for determining purity level of hydrogen gas provided to an anode side of the fuel cellGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jun 25, 2019·0 cites·20 claims
- 4047US9231263B2Selectively reacting to the minimum cell voltage drop rate in a fuel cell systemGM GLOBAL TECH OPERATIONS INC·Filed 2013·Granted Jan 5, 2016·0 cites·17 claims
- 4146US10547074B2Anionic scavenger materials in anode/cathode loop of fuel cell systemGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Jan 28, 2020·0 cites·15 claims
- 4246US2008292921A1Recovery of inert gas from a fuel cell exhaust streamLAKSHMANAN BALASUBRAMANIAN·Filed 2007·Application pending·0 cites
- 4346US2010114513A1Estimating minimum voltage of fuel cellsGM GLOBAL TECH OPERATIONS INC·Filed 2008·Application pending·0 cites
- 4445US10811713B2Method of manufacturing an integrated water vapor transfer device and fuel cellGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Oct 20, 2020·0 cites·25 claims
- 4545US10276878B2Coated aluminum bipolar plate for fuel cell applicationsGM GLOBAL TECH OPERATIONS LLC·Filed 2016·Granted Apr 30, 2019·0 cites·18 claims
- 4644US2019123364A1Fuel cell having an integrated water vapor transfer regionGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Application pending·0 cites
- 4743US10186723B2Method to actively control cell pressure drop during operationGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Granted Jan 22, 2019·0 cites·10 claims
- 4843US8374808B2Detection method for membrane and electrode failures in fuel cell stacksGM GLOBAL TECH OPERATIONS INC·Filed 2010·Granted Feb 12, 2013·0 cites·20 claims
- 4943US2018202041A1Method and system for manufacturing a stainless steel substrate with a corrosion resistant coatingGM GLOBAL TECH OPERATIONS LLC·Filed 2017·Application pending·0 cites
- 5042US11158871B2Fuel cell assembly and a vehicle that utilizes the fuel cell assemblyGM GLOBAL TECH OPERATIONS LLC·Filed 2018·Granted Oct 26, 2021·0 cites·20 claims
Showing the top 50 of 59 patent records by PatentIndex Score.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →