Patents by Inventor Kishor Purushottam Gadkaree

Kishor Purushottam Gadkaree 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).

  • Methods for forming activated carbon material for high energy density ultracapacitors
    Patent number: 8784764
    Abstract: A method for producing an activated carbon material includes forming an aqueous mixture of a natural, non-lignocellulosic carbon precursor and an inorganic compound, heating the mixture in an inert or reducing atmosphere, cooling the heated mixture to form a first carbon material, and removing the inorganic compound to produce an activated carbon material. The activated carbon material is suitable to form improved carbon-based electrodes for use in high energy density devices.
    Type: Grant
    Filed: December 15, 2008
    Date of Patent: July 22, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Joseph Frank Mach
  • Sorbent bodies comprising activated carbon, processes for making them, and their use
    Patent number: 8741243
    Abstract: Sorbent bodies comprising activated carbon, processes for making them, and methods of using them. The sorbent bodies can be used to remove toxic elements from a fluid, such as from a gas stream. For instance, the sorbent bodies may be used to remove elemental mercury or mercury in an oxidized state from a coal combustion flue gas.
    Type: Grant
    Filed: May 13, 2008
    Date of Patent: June 3, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Benedict Yorke Johnson, Pei Qiong Kuang, Anbo Liu, Youchun Shi
  • LITHIUM ION CAPACITORS AND METHODS OF PRODUCTION
    Publication number: 20140146440
    Abstract: A lithium-ion capacitor may include a cathode, an anode, a separator disposed between the cathode and the anode, a lithium composite material, and an electrolyte solution. The cathode and anode may be non-porous. The lithium composite material comprises a core of lithium metal and a coating of a complex lithium salt that encapsulates the core. In use, the complex lithium salt may dissolve into and constitute a portion of the electrolyte solution.
    Type: Application
    Filed: November 28, 2012
    Publication date: May 29, 2014
    Inventors: Kishor Purushottam Gadkaree, Xiaorong Liu
  • STABILIZED LITHIUM COMPOSITE PARTICLES
    Publication number: 20140134438
    Abstract: Stabilized lithium particles include a lithium-containing core and a coating of a complex lithium salt that surrounds and encapsulates the core. The coating, which is a barrier to oxygen and water, enables the particles to be handled in the open air and incorporated directly into electrochemical devices. The coating material is compatible, for example, with electrolytic materials that are used in electrochemical cells. The average coated particle size is less than 500 microns.
    Type: Application
    Filed: November 9, 2012
    Publication date: May 15, 2014
    Applicant: CORNING INCORPORATED
    Inventors: Kishor Purushottam Gadkaree, Xiaorong Liu
  • ELECTROLYTE SYNTHESIS FOR ULTRACAPACITORS
    Publication number: 20140124694
    Abstract: A method of forming an electrolyte solution involves combining ammonium tetrafluoroborate and a quaternary ammonium halide in a liquid solvent to form a quaternary ammonium tetrafluoroborate and an ammonium halide. The ammonium halide precipitate is removed from the solvent to form an electrolyte solution. The reactants can be added step-wise to the solvent, and the method can include using a stoichiometric excess of the ammonium tetrafluoroborate to form a substantially halide ion-free electrolyte solution.
    Type: Application
    Filed: January 13, 2014
    Publication date: May 8, 2014
    Applicant: Coming Incorporated
    Inventor: Kishor Purushottam Gadkaree
  • ELECTROLYTE SYNTHESIS FOR ULTRACAPACITORS
    Publication number: 20140103245
    Abstract: A method of forming an electrolyte solution involves combining ammonium tetrafluoroborate and a quaternary ammonium halide in a liquid solvent to form a quaternary ammonium tetrafluoroborate and an ammonium halide. The ammonium halide precipitate is removed from the solvent to form an electrolyte solution. The reactants can be added step-wise to the solvent, and the method can include using a stoichiometric excess of the ammonium tetrafluoroborate to form a substantially halide ion-free electrolyte solution. Filtration can be done at low temperatures to reduce the amount of excess bromide in the resulting electrolyte.
    Type: Application
    Filed: December 20, 2013
    Publication date: April 17, 2014
    Inventors: Kishor Purushottam Gadkaree, Satyanarayana Kodali
  • Sorbent comprising activated carbon particles, sulfur and metal catalyst
    Patent number: 8691722
    Abstract: Sorbents comprising activated carbon particles, sulfur, and metal catalyst. The sorbents may be used, for example, for the removal of a contaminant, such as mercury, from a fluid stream.
    Type: Grant
    Filed: July 3, 2008
    Date of Patent: April 8, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Anbo Liu
  • Multi-layered electrode for ultracapacitors
    Patent number: 8687346
    Abstract: A multi-layer electrode includes a current collector having opposing first and second major surfaces, a fused carbon layer formed over one or both of the major surfaces, a conductive adhesion layer formed over each fused carbon layer, and an activated carbon layer formed over each conductive adhesive layer. The multi-layer electrode can be incorporated into a high energy density, high power density device such as an electric double layer capacitor.
    Type: Grant
    Filed: May 27, 2010
    Date of Patent: April 1, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, James Robert Lim, Kamjula Pattabhirami Reddy
  • Electrolyte synthesis for ultracapacitors
    Patent number: 8663492
    Abstract: A method of forming an electrolyte solution involves combining ammonium tetrafluoroborate and a quaternary ammonium halide in a liquid solvent to form a quaternary ammonium tetrafluoroborate and an ammonium halide. The ammonium halide precipitate is removed from the solvent to form an electrolyte solution. The reactants can be added step-wise to the solvent, and the method can include using a stoichiometric excess of the ammonium tetrafluoroborate to form a substantially halide ion-free electrolyte solution.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: March 4, 2014
    Assignee: Corning Incorporated
    Inventor: Kishor Purushottam Gadkaree
  • Methods of making and using activated carbon-containing coated substrates and the products made therefrom
    Patent number: 8664154
    Abstract: The present disclosure relates to methods of making and using activated carbon-containing coated substrates, and products made therefrom.
    Type: Grant
    Filed: June 20, 2013
    Date of Patent: March 4, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Andrew Fleitz Husted, James Robert Lim
  • CARBON ACTIVATION IN A MICROWAVE FLUIDIZED BED PROCESS
    Publication number: 20140056799
    Abstract: A method for forming activated carbon from carbon feedstock involves forming particles of the carbon feedstock, introducing the carbon feedstock particles into a microwave reaction chamber and forming a fluidized bed of the particles within the chamber, introducing steam into the reaction chamber, and introducing microwaves into the reaction chamber to heat the particles using microwave energy and react the heated particles with the steam to form activated carbon.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 27, 2014
    Inventors: Kishor Purushottam Gadkaree, Andrew Fleitz Husted, Naveen Kekre, Jia Liu
  • MICROWAVE ENERGY-ASSISTED, CHEMICAL ACTIVATION OF CARBON
    Publication number: 20140056798
    Abstract: A method for forming activated carbon comprises forming a feedstock mixture from a carbon feedstock and a chemical activating agent, and heating the feedstock mixture with microwaves in a plurality of successive heating steps to react the carbon feedstock with the chemical activating agent and form activated carbon. Step-wise heating can be used to efficiently control the microwave activation process.
    Type: Application
    Filed: August 21, 2012
    Publication date: February 27, 2014
    Inventors: Tonia Havewala Fletcher, Kishor Purushottam Gadkaree, Kamjula Pattabhirami Reddy, Rebecca Lynn Schulz
  • Steam activated non-lignocellulosic based carbons for ultracapacitors
    Patent number: 8652995
    Abstract: A method for producing an activated carbon material includes heating a non-lignocellulosic carbon precursor to form a carbon material and reacting the carbon material with steam to form an activated carbon material. The activated carbon material is suitable to form improved carbon-based electrodes for use in high energy density devices.
    Type: Grant
    Filed: July 19, 2011
    Date of Patent: February 18, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Andrew Fleitz Husted, Jia Liu
  • Electrolyte synthesis for ultracapacitors
    Patent number: 8636916
    Abstract: A method of forming an electrolyte solution involves combining ammonium tetrafluoroborate and a quaternary ammonium halide in a liquid solvent to form a quaternary ammonium tetrafluoroborate and an ammonium halide. The ammonium halide precipitate is removed from the solvent to form an electrolyte solution. The reactants can be added step-wise to the solvent, and the method can include using a stoichiometric excess of the ammonium tetrafluoroborate to form a substantially halide ion-free electrolyte solution. Filtration can be done at low temperatures to reduce the amount of excess bromide in the resulting electrolyte.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: January 28, 2014
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Satyanarayana Kodali
  • ELECTROCHEMICAL HIGH RATE STORAGE MATERIALS, PROCESS AND ELECTRODES
    Publication number: 20140017568
    Abstract: A non-activated, majority non-graphitic amorphous carbon material may be produced by supplying a carbonized precursor material, heating the carbonized precursor material in a first heating step at a temperature and for a duration sufficient to produce a heat-treated carbon material that has a specific surface area less than about 500 m2/g and is less than about 20% graphitic by mass, purifying the heat-treated carbon material, and heating the purified heat-treated carbon material in a second heating step at a temperature and for a duration to produce a non-activated, majority non-graphitic amorphous carbon material that has a specific surface area less than about 500 m2/g and is less than about 20% graphitic by mass.
    Type: Application
    Filed: July 13, 2012
    Publication date: January 16, 2014
    Inventors: Kishor Purushottam Gadkaree, James Robert Lim
  • ULTRACAPACITOR WITH IMPROVED AGING PERFORMANCE
    Publication number: 20140016246
    Abstract: An electric double layer capacitor comprises first and second electrodes, each comprising respective first and second carbon materials having distinct pore size distributions. A pore volume ratio of the first carbon material is greater than a pore volume ratio of the second carbon material. The pore volume ratio R is defined as R=V1/V, where V1 is a total volume of pores having a pore size of less than 1 nm, and V is a total volume of pores having a pore size greater than 1 nm.
    Type: Application
    Filed: September 19, 2013
    Publication date: January 16, 2014
    Applicant: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Kamjula Pattabhirami Reddy
  • HIGHLY POROUS ACTIVATED CARBON WITH CONTROLLED OXYGEN CONTENT
    Publication number: 20130342964
    Abstract: Nanoporous activated carbon material having a high specific capacitance in EDLCs and controlled oxygen content, and methods for making such activated carbon material. Reduction of oxygen content is achieved by (a) curing a carbon precursor/additive mixture in an inert or reducing environment, and/or (b) refining (heating) activated carbon material after synthesis in an inert or reducing environment. The inert or reducing environment used for curing or refining is preferably substantially free of oxygen.
    Type: Application
    Filed: August 22, 2013
    Publication date: December 26, 2013
    Applicant: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Jia Liu
  • Methods of making and using activated carbon-containing coated substrates and the products made therefrom
    Patent number: 8598073
    Abstract: The present disclosure relates to methods of making and using activated carbon-containing coated substrates, and products made therefrom.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: December 3, 2013
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Andrew Fleitz Husted, James Robert Lim
  • Electrochemical capacitor having lithium containing electrolyte
    Patent number: 8593787
    Abstract: A device having a first electrode, a second electrode, a separator positioned between the first electrode and the second electrode, and an electrolyte incorporated throughout the first electrode, the second electrode, and the separator. The electrolyte includes one or more lithium salts and one or more solvents. The first electrode and second electrodes comprise a majority of activated carbon having a microporous pore size distribution.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: November 26, 2013
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Shrisudersan Jayaraman, James Robert Lim
  • Electrolyte system
    Patent number: 8576541
    Abstract: An electrolyte system having a conductive salt dispersed in a solvent mixture, the solvent mixture having an organic nitrile solvent and a co-solvent. The concentration of the conductive salt in the electrolyte system is 1.25 molar to 3.0 molar.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: November 5, 2013
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Shrisudersan Jayaraman