Patents by Inventor Sameer Singhal

Sameer Singhal has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230344364
    Abstract: A voltage source converter includes first and second DC terminals which have at least one converter limb extending therebetween. Each limb portion includes a chain-link converter that extends between an associated AC terminal and a corresponding one of the first or the second DC terminal. Each chain-link converter also includes a chain-link converter controller which is programmed to control a series of connected chain-link modules. The voltage source converter additionally includes a voltage source converter controller which is arranged in operative communication with each chain-link converter controller to coordinate operation of the chain-link converters. Each chain-link converter controller is further programmed to reconstruct from a received modulation index demand the chain-link converter voltage reference, which the chain-link converter it is controlling is required to produce, by multiplying the received modulation index demand by a total voltage sum established at a first time instant.
    Type: Application
    Filed: May 28, 2021
    Publication date: October 26, 2023
    Applicant: General Electric Technology GmbH
    Inventors: Pablo BRIFF, Andrzej ADAMCZYK, Sameer SINGHAL
  • Patent number: 11664504
    Abstract: A method of producing electrical power includes: a cathode having a porphyrin precursor attached to a substrate, and having a first enzyme, wherein the first enzyme reduces oxygen; an anode having a first region of an anode substrate and having a gold nanoparticle composition located thereon, and having a second region of the anode substrate having an enzyme composition located thereon, wherein the enzyme composition includes a second enzyme, wherein the first region and second region are separate regions; and a neutral fuel liquid in contact with the anode and cathode, the neutral fuel liquid having a neutral pH and a fuel reagent; and operating the fuel cell to produce electrical power with the neutral fuel liquid having the neutral pH and the fuel reagent.
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: May 30, 2023
    Assignee: CFD Research Corporation
    Inventors: Mary Arugula, Erica Wagner Pinchon, Sameer Singhal, Yevgenia Ulyanova
  • Publication number: 20210384520
    Abstract: A method of producing electrical power includes: a cathode having a porphyrin precursor attached to a substrate, and having a first enzyme, wherein the first enzyme reduces oxygen; an anode having a first region of an anode substrate and having a gold nanoparticle composition located thereon, and having a second region of the anode substrate having an enzyme composition located thereon, wherein the enzyme composition includes a second enzyme, wherein the first region and second region are separate regions; and a neutral fuel liquid in contact with the anode and cathode, the neutral fuel liquid having a neutral pH and a fuel reagent; and operating the fuel cell to produce electrical power with the neutral fuel liquid having the neutral pH and the fuel reagent.
    Type: Application
    Filed: August 19, 2021
    Publication date: December 9, 2021
    Inventors: Mary Arugula, Erica Wagner Pinchon, Sameer Singhal, Yevgenia Ulyanova
  • Patent number: 11139500
    Abstract: An anode can include: an electrode substrate; a first region of the substrate having a catalyst composition located thereon, wherein the catalyst composition includes an inorganic or metallic catalyst; and a second region of the substrate having an enzyme composition located thereon, wherein the combination of the catalyst composition and enzyme composition converts a fuel reagent to carbon dioxide at neutral pH. The first region and second region can be separate regions. The catalyst of the catalyst composition can include gold nanoparticles. The catalyst can include an inorganic or metallic catalyst selected from vanadium oxide, titanium (III) chloride, Pd(OAc)2, MnO, zeolite, alumina, graphitic carbon, palladium, platinum, gold, ruthenium, rhodium, iridium, or combinations thereof. The catalyst can be nanoparticle, nanorod, nanodot, or combination thereof. The catalyst can have sizes that range from about 10 to 20 nm.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: October 5, 2021
    Assignee: CFD Research Corporation
    Inventors: Mary Arugula, Erica Wagner Pinchon, Sameer Singhal
  • Patent number: 11127966
    Abstract: A cathode can include: an electrode substrate; a porphyrin precursor attached to the substrate; and an enzyme coupled to the electrode substrate to be associated with the porphyrin precursor, the enzyme reduces oxygen. The cathode can include a conductive material associated with the porphyrin precursor and/or the enzyme. The cathode can include 1-pyrenebutanoic acid, succinimidyl ester (PBSE) associated with the porphyrin precursor and/or the enzyme and/or the conductive material. The cathode can include 2,5-dimethyl-1-phenyl-1H-pyrrole-3-carbaldehyde (DMY-Carb) associated with the 1-pyrenebutanoic acid, succinimidyl ester (PBSE) and/or the porphyrin precursor and/or the enzyme and/or the conductive material. The porphyrin precursor is attached to the substrate through covalent coupling.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: September 21, 2021
    Assignee: CFD Research Corporation
    Inventors: Mary Arugula, Erica Wagner Pinchon, Sameer Singhal, Yevgenia Ulyanova
  • Patent number: 11094945
    Abstract: An electrolyte composition can be capable of becoming molten when heated sufficiently. The electrolyte can include at least one lithium halide salt; and at least one lithium non-halide salt combined with the at least one lithium halide salt so as to form an electrolyte composition capable of becoming molten when above a melting point about 350° C. A lithium halide salt includes a halide selected from F and Cl. A first lithium non-halide salt can be selected from the group consisting of LiVO3, Li2SO4, LiNO3, and Li2MoO4. A thermal battery can include the electrolyte composition, such as in the cathode, anode, and/or separator region therebetween. The battery can discharge electricity by having the electrolyte composition at a temperature so as to be a molten electrolyte.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: August 17, 2021
    Assignee: CFD Research Corporation
    Inventors: Pyoungho Choi, Sameer Singhal
  • Publication number: 20200083543
    Abstract: A thermal battery can include: an anode of lithium alloy; a metal-fluoride cathode having Ni; and an electrolyte composition in contact with the anode and cathode. The electrolyte composition can be a tertiary electrolyte composition of LiF—LiCl—Li2SO4. A thermal battery can also include: an anode of lithium alloy; a metal-fluoride cathode having an oxide selected from V2O5 or LiVO3; and an electrolyte composition in contact with the anode and cathode. In one aspect, a metal of the metal fluoride cathode includes Ni, Fe, V, Cr, Mn, Co, or mixture thereof. In one aspect, the metal-fluoride cathode includes NiF2, FeF3, VF3, CrF3, MnF3, CoF3, or a mixture thereof. A method of providing electricity can include: providing an electronic device having a thermal battery with a metal-fluoride cathode having Ni and/or having an oxide selected from V2O5 or LiVO3; and discharging the thermal battery to provide electricity.
    Type: Application
    Filed: July 3, 2019
    Publication date: March 12, 2020
    Applicant: CFD Research Corporation
    Inventors: Pyoungho CHOI, Sameer Singhal, Joe Don Edington
  • Publication number: 20200028194
    Abstract: An anode can include: an electrode substrate; a first region of the substrate having a catalyst composition located thereon, wherein the catalyst composition includes an inorganic or metallic catalyst; and a second region of the substrate having an enzyme composition located thereon, wherein the combination of the catalyst composition and enzyme composition converts a fuel reagent to carbon dioxide at neutral pH. The first region and second region can be separate regions. The catalyst of the catalyst composition can include gold nanoparticles. The catalyst can include an inorganic or metallic catalyst selected from vanadium oxide, titanium (III) chloride, Pd(OAc)2, MnO, zeolite, alumina, graphitic carbon, palladium, platinum, gold, ruthenium, rhodium, iridium, or combinations thereof. The catalyst can be nanoparticle, nanorod, nanodot, or combination thereof. The catalyst can have sizes that range from about 10 to 20 nm.
    Type: Application
    Filed: February 4, 2019
    Publication date: January 23, 2020
    Inventors: Mary Arugula, Erica Wagner Pinchon, Sameer Singhal
  • Publication number: 20200028181
    Abstract: A cathode can include: an electrode substrate; a porphyrin precursor attached to the substrate; and an enzyme coupled to the electrode substrate to be associated with the porphyrin precursor, the enzyme reduces oxygen. The cathode can include a conductive material associated with the porphyrin precursor and/or the enzyme. The cathode can include 1-pyrenebutanoic acid, succinimidyl ester (PBSE) associated with the porphyrin precursor and/or the enzyme and/or the conductive material. The cathode can include 2,5-dimethyl-1-phenyl-1H-pyrrole-3-carbaldehyde (DMY-Carb) associated with the 1-pyrenebutanoic acid, succinimidyl ester (PBSE) and/or the porphyrin precursor and/or the enzyme and/or the conductive material. The porphyrin precursor is attached to the substrate through covalent coupling.
    Type: Application
    Filed: February 4, 2019
    Publication date: January 23, 2020
    Inventors: Mary Arugula, Erica Wagner Pinchon, Sameer Singhal, Yevgenia Ulyanova
  • Patent number: 10446853
    Abstract: A thermal battery can include: an anode of lithium alloy; a metal-fluoride cathode having Ni; and an electrolyte composition in contact with the anode and cathode. A thermal battery can also include: an anode of lithium alloy; a metal-fluoride cathode having an oxide selected from V2O5 or LiVO3; and an electrolyte composition in contact with the anode and cathode. In one aspect, a metal of the metal fluoride cathode includes Ni, Fe, V, Cr, Mn, Co, or mixture thereof. In one aspect, the metal-fluoride cathode includes NiF2, FeF3, VF3, CrF3, MnF3, CoF3, or a mixture thereof. A method of providing electricity can include: providing an electronic device having a thermal battery with a metal-fluoride cathode having Ni and/or having an oxide selected from V2O5 or LiVO3; and discharging the thermal battery to provide electricity.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: October 15, 2019
    Assignee: CFD Research Corporation
    Inventors: Pyoungho Choi, Sameer Singhal, Joe Don Edington
  • Patent number: 9994725
    Abstract: The present disclosure provides an aqueous based electrically conductive ink, which is essentially solvent free and includes a nano-scale conducting material; a binding agent; and an enzyme. In one embodiment, the ink includes at least one of a mediator, a cross-linking agent and a substrate as well. In one further embodiment, the present disclosure provides electrically conductive ink including a single walled, carboxylic acid functionalized carbon nanotube; 1-Ethyl-3-[3-dimethylaminopropyl]carbodiimide hydrochloride and N-hydroxy succinimide (NHS) ester; polyethyleneimine; an aqueous buffer; and glucose oxidase.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: June 12, 2018
    Assignee: CFD Research Corporation, Inc.
    Inventors: Vojtech Svoboda, Jianjun Wei, Sameer Singhal, Yevgenia Ulyanova
  • Patent number: 9978858
    Abstract: Gallium nitride material devices and methods associated with the same. In some embodiments, the devices may be transistors which include a conductive structure connected to a source electrode. The conductive structure may form a source field plate which can be formed over a dielectric material and can extend in the direction of the gate electrode of the transistor. The source field plate may reduce the electrical field (e.g., peak electrical field and/or integrated electrical field) in the region of the device between the gate electrode and the drain electrode which can lead to a number of advantages including reduced gate-drain feedback capacitance, reduced surface electron concentration, increased breakdown voltage, and improved device reliability. These advantages enable the gallium nitride material transistors to operate at high drain efficiencies and/or high output powers. The devices can be used in RF power applications, amongst others.
    Type: Grant
    Filed: February 15, 2017
    Date of Patent: May 22, 2018
    Assignee: Infineon Technologies Americas Corp.
    Inventors: Jerry Wayne Johnson, Sameer Singhal, Allen W. Hanson, Robert Joseph Therrien
  • Publication number: 20170352891
    Abstract: A thermal battery can include: an anode of lithium alloy; a metal-fluoride cathode having Ni; and an electrolyte composition in contact with the anode and cathode. A thermal battery can also include: an anode of lithium alloy; a metal-fluoride cathode having an oxide selected from V2O5 or LiVO3; and an electrolyte composition in contact with the anode and cathode. In one aspect, a metal of the metal fluoride cathode includes Ni, Fe, V, Cr, Mn, Co, or mixture thereof. In one aspect, the metal-fluoride cathode includes NiF2, FeF3, VF3, CrF3, MnF3, CoF3, or a mixture thereof. A method of providing electricity can include: providing an electronic device having a thermal battery with a metal-fluoride cathode having Ni and/or having an oxide selected from V2O5 or LiVO3; and discharging the thermal battery to provide electricity.
    Type: Application
    Filed: August 24, 2017
    Publication date: December 7, 2017
    Inventors: Pyoungho Choi, Sameer Singhal, Joe Don Edington
  • Publication number: 20170154989
    Abstract: Gallium nitride material devices and methods associated with the same. In some embodiments, the devices may be transistors which include a conductive structure connected to a source electrode. The conductive structure may form a source field plate which can be formed over a dielectric material and can extend in the direction of the gate electrode of the transistor. The source field plate may reduce the electrical field (e.g., peak electrical field and/or integrated electrical field) in the region of the device between the gate electrode and the drain electrode which can lead to a number of advantages including reduced gate-drain feedback capacitance, reduced surface electron to concentration, increased breakdown voltage, and improved device reliability. These advantages enable the gallium nitride material transistors to operate at high drain efficiencies and/or high output powers. The devices can be used in RF power applications, amongst others.
    Type: Application
    Filed: February 15, 2017
    Publication date: June 1, 2017
    Inventors: Jerry Wayne Johnson, Sameer Singhal, Allen W. Hanson, Robert Joseph Therrien
  • Patent number: 9608102
    Abstract: Gallium nitride material devices and methods associated with the same. In some embodiments, the devices may be transistors which include a conductive structure connected to a source electrode. The conductive structure may form a source field plate which can be formed over a dielectric material and can extend in the direction of the gate electrode of the transistor. The source field plate may reduce the electrical field (e.g., peak electrical field and/or integrated electrical field) in the region of the device between the gate electrode and the drain electrode which can lead to a number of advantages including reduced gate-drain feedback capacitance, reduced surface electron concentration, increased breakdown voltage, and improved device reliability. These advantages enable the gallium nitride material transistors to operate at high drain efficiencies and/or high output powers. The devices can be used in RF power applications, amongst others.
    Type: Grant
    Filed: November 30, 2006
    Date of Patent: March 28, 2017
    Assignee: Infineon Technologies Americas Corp.
    Inventors: Jerry Wayne Johnson, Sameer Singhal, Allen W. Hanson, Robert Joseph Therrien
  • Publication number: 20170062861
    Abstract: The present disclosure provides a method of generating electricity from a long chain hydrocarbon, said method comprising contacting the liquid non-polar substrate with a plurality of enzymes, wherein at least one enzyme is non-electric current/potential enzyme that functions as a catalyst for chemical reaction transforming a first substrate or byproduct to a second substance that can be used with an additional electric current/potential generating enzyme.
    Type: Application
    Filed: November 14, 2016
    Publication date: March 2, 2017
    Inventors: Yevgenia Ulyanova, Shelley Minteer, Sameer Singhal, Vojtech Svoboda, Jianjun Wei
  • Patent number: 9509009
    Abstract: The present disclosure provides a method of generating electricity from a long chain hydrocarbon, said method comprising contacting the liquid non-polar substrate with a plurality of enzymes, wherein at least one enzyme is non-electric current/potential enzyme that functions as a catalyst for chemical reaction transforming a first substrate or byproduct to a second substance that can be used with an additional electric current/potential generating enzyme.
    Type: Grant
    Filed: April 25, 2014
    Date of Patent: November 29, 2016
    Assignee: CFD Research Corporation
    Inventors: Yevgenia Ulyanova, Shelley Minteer, Sameer Singhal, Vojtech Svoboda, Jianjun Wei
  • Publication number: 20160079608
    Abstract: An electrolyte composition can be capable of becoming molten when heated sufficiently. The electrolyte can include at least one lithium halide salt; and at least one lithium non-halide salt combined with the at least one lithium halide salt so as to form an electrolyte composition capable of becoming molten when above a melting point about 350° C. A lithium halide salt includes a halide selected from F and Cl. A first lithium non-halide salt can be selected from the group consisting of LiVO3, Li2SO4, LiNO3, and Li2MoO4. A thermal battery can include the electrolyte composition, such as in the cathode, anode, and/or separator region therebetween. The battery can discharge electricity by having the electrolyte composition at a temperature so as to be a molten electrolyte.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 17, 2016
    Inventors: Pyoungho Choi, Sameer Singhal
  • Publication number: 20160079609
    Abstract: A thermal battery can include an anode of lithium alloy; a metal-fluoride cathode; and an electrolyte composition in contact with the anode and cathode. The lithium alloy can be lithium silicone or lithium aluminum. The metal-fluoride cathode includes FeF3, VF3, CrF3, MnF3, CoF3, or a mixture thereof. The metal-fluoride cathode includes a carbon material therein, such as activated carbon, graphite, graphene, carbon nanotube, and combinations thereof. The metal-fluoride cathode can include FeF3, FeF3 and FeS2, CoF3, or CoF3 and CoS2. The metal-fluoride cathode can be devoid of FeS2. The metal-fluoride cathode can further include a metal-sulfide, such as FeS2 or CoS2.
    Type: Application
    Filed: September 10, 2015
    Publication date: March 17, 2016
    Inventors: Pyoungho Choi, Sameer Singhal
  • Publication number: 20150050566
    Abstract: The present disclosure provides a method of generating electricity from a long chain hydrocarbon, said method comprising contacting the liquid non-polar substrate with a plurality of enzymes, wherein at least one enzyme is non-electric current/potential enzyme that functions as a catalyst for chemical reaction transforming a first substrate or byproduct to a second substance that can be used with an additional electric current/potential generating enzyme.
    Type: Application
    Filed: April 25, 2014
    Publication date: February 19, 2015
    Applicant: CFD Research Corporation
    Inventors: Yevgenia Ulyanova, Shelley Minteer, Sameer Singhal, Vojtech Svoboda, Jianjun Wei