Patents by Inventor Sai Bhavaraju

Sai Bhavaraju 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: 20140210422
    Abstract: The present invention provides a molten sodium secondary cell. In some cases, the secondary cell includes a sodium metal negative electrode, a positive electrode compartment that includes a positive electrode disposed in a molten positive electrolyte comprising Na-FSA (sodium-bis(fluorosulonyl)amide), and a sodium ion conductive electrolyte membrane that separates the negative electrode from the positive electrolyte. One disclosed example of electrolyte membrane material includes, without limitation, a NaSICON-type membrane. Non-limiting examples of the positive electrode include Ni, Zn, Cu, or Fe. The cell is functional at an operating temperature between about 100° C. and about 150° C., and preferably between about 110° C. and about 130° C.
    Type: Application
    Filed: March 12, 2014
    Publication date: July 31, 2014
    Applicant: Ceramatec, Inc.
    Inventors: Sai Bhavaraju, Mathew Robins
  • Publication number: 20140212707
    Abstract: The present invention provides a molten sodium secondary cell. In some cases, the secondary cell includes a sodium metal negative electrode, a positive electrode compartment that includes a positive electrode disposed in a molten positive electrolyte comprising Na—FSA (sodium-bis(fluorosulonyl)amide), and a sodium ion conductive electrolyte membrane that separates the negative electrode from the positive electrolyte. One disclosed example of electrolyte membrane material includes, without limitation, a NaSICON-type membrane. The positive electrode includes a sodium intercalation electrode. Non-limiting examples of the sodium intercalation electrode include NaxMnO2, NaxCrO2, NaxNiO, and NaxFey(PO4)z. The cell is functional at an operating temperature between about 100° C. and about 150° C., and preferably between about 110° C. and about 130° C.
    Type: Application
    Filed: March 11, 2014
    Publication date: July 31, 2014
    Applicant: Ceramatec, Inc.
    Inventors: Sai Bhavaraju, Mathew Robins
  • Publication number: 20140199577
    Abstract: The present invention provides an electrochemical cell that includes an anolyte compartment housing an anode electrode; a catholyte compartment housing a cathode electrode; and a solid alkali ion conductive electrolyte membrane separating the anolyte compartment from the cathode compartment. In some cases, the electrolyte membrane is selected from a sodium ion conductive electrolyte membrane and a lithium ion conductive membrane. In some cases, the at least one of anode or the cathode includes an alkali metal intercalation material.
    Type: Application
    Filed: March 4, 2014
    Publication date: July 17, 2014
    Applicant: Ceramatec, Inc.
    Inventor: Sai Bhavaraju
  • Publication number: 20140190820
    Abstract: An apparatus for cleaning and/or disinfecting a surface or object is disclosed. In one embodiment, such an apparatus includes a container that is refillable with water. A sparingly soluble solid is provided in the container and is positioned to contact the water. The sparingly soluble solid slightly dissolves in the water to form a dilute solution that acts as a cleaning and/or disinfecting solution. The sparingly soluble solid is provided in a quantity sufficient to last several refills of the container.
    Type: Application
    Filed: January 4, 2013
    Publication date: July 10, 2014
    Inventors: Ashok V. Joshi, Sai Bhavaraju
  • Publication number: 20140183053
    Abstract: A method that produces coupled radical products. The method involves obtaining a sodium salt of a sulfonic acid (R—SO3—Na). The alkali metal salt is then used in an anolyte as part of an electrolytic cell. The electrolytic cell may include an alkali ion conducting membrane (such as a NaSICON membrane). When the cell is operated, the alkali metal salt of the sulfonic acid desulfoxylates and forms radicals. Such radicals are then bonded to other radicals, thereby producing a coupled radical product such as a hydrocarbon. The produced hydrocarbon may be, for example, saturated, unsaturated, branched, or unbranched, depending upon the starting material.
    Type: Application
    Filed: March 5, 2014
    Publication date: July 3, 2014
    Applicant: CERAMATEC, INC.
    Inventors: Sai Bhavaraju, Justin Pendleton
  • Publication number: 20140171688
    Abstract: Ketones, specifically Methyl ethyl ketone (“MEK”) and octanedione, may be formed from six carbon sugars. This process involves obtaining a quantity of a six carbon sugar and then reacting the sugar to form levulinic acid and formic acid. The levulinic acid and formic acid are then converted to an alkali metal levulinate and an alkali metal formate (such as, for example, sodium levulinate and sodium formate.) The alkali metal levulinate is placed in an anolyte along with hydrogen gas that is used in an electrolytic cell. The alkali metal levulinate within the anolyte is decarboxylated to form MEK radicals, wherein the MEK radicals react with hydrogen gas to form MEK, or MEK radicals react with each other to form octanedione. The alkali metal formate may also be decarboxylated in the cell, thereby forming hydrogen radicals that react with the MEK radicals to form MEK.
    Type: Application
    Filed: December 17, 2012
    Publication date: June 19, 2014
    Inventors: Mukund Karanjikar, Sai Bhavaraju
  • Publication number: 20140170443
    Abstract: The present invention provides an electrochemical cell having an negative electrode compartment and a positive electrode compartment. A solid alkali ion conductive electrolyte membrane is positioned between the negative electrode compartment and the positive electrode compartment. A catholyte solution in the positive electrode compartment includes a halide ion or pseudohalide ion concentration greater than 3M, which provides degradation protection to the alkali ion conductive electrolyte membrane. The halide ion or pseudohalide ion is selected from chloride, bromide, iodide, azide, thiocyanate, and cyanide. In some embodiments, the electrochemical cell is a molten sodium rechargeable cell which functions at an operating temperature between about 100° C. and about 150° C.
    Type: Application
    Filed: November 5, 2013
    Publication date: June 19, 2014
    Applicant: Ceramatec, Inc.
    Inventors: Sai Bhavaraju, Mathew Robins, Chett Boxley
  • Publication number: 20140154766
    Abstract: A method that produces coupled radical products from biomass. The method involves obtaining a lipid or carboxylic acid material from the biomass. This material may be a carboxylic acid, an ester of a carboxylic acid, a triglyceride of a carboxylic acid, or a metal salt of a carboxylic acid, or any other fatty acid derivative. This lipid material or carboxylic acid material is converted into an alkali metal salt. The alkali metal salt is then used in an anolyte as part of an electrolytic cell. The electrolytic cell may include an alkali ion conducting membrane (such as a NaSICON membrane). When the cell is operated, the alkali metal salt of the carboxylic acid decarboxylates and forms radicals. Such radicals are then bonded to other radicals, thereby producing a coupled radical product such as a hydrocarbon. The produced hydrocarbon may be, for example, saturated, unsaturated, branched, or unbranched, depending upon the starting material.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 5, 2014
    Applicant: Ceramatec, Inc.
    Inventors: Mukund Karanjikar, Sai Bhavaraju, Ashok V. Joshi, Pallavi Chitta, David Joel Hunt
  • Patent number: 8722221
    Abstract: A method for discharging a nickel-metal hydride storage battery comprising a positive electrode containing nickel hydroxide, a negative electrode containing a hydrogen absorbing alloy, an alkaline electrolyte, and an alkali conducting separator provided between the positive electrode and the negative electrode. The alkali conducting separator may be a solid alkali metal ion super ion conducting material, wherein the alkali metal is Na, K, or Li.
    Type: Grant
    Filed: July 22, 2011
    Date of Patent: May 13, 2014
    Assignee: Ceramatec, Inc.
    Inventors: Ashok V. Joshi, John Howard Gordon, Sai Bhavaraju, John Joseph Watkins
  • Publication number: 20140065456
    Abstract: A sodium-halogen secondary cell that includes a negative electrode compartment housing a negative, sodium-based electrode and a positive electrode compartment housing a current collector disposed in a liquid positive electrode solution. The liquid positive electrode solution includes a halogen and/or a halide. The cell includes a sodium ion conductive electrolyte membrane that separates the negative electrode from the liquid positive electrode solution. Although in some cases, the negative sodium-based electrode is molten during cell operation, in other cases, the negative electrode includes a sodium electrode or a sodium intercalation carbon electrode that is solid during operation.
    Type: Application
    Filed: September 6, 2013
    Publication date: March 6, 2014
    Applicant: Ceramates, Inc.
    Inventors: Sai Bhavaraju, Mathew Robins, Alexis Eccelston
  • Patent number: 8647492
    Abstract: A method that produces coupled radical products from biomass. The method involves obtaining a lipid or carboxylic acid material from the biomass. This material may be a carboxylic acid, an ester of a carboxylic acid, a triglyceride of a carboxylic acid, or a metal salt of a carboxylic acid, or any other fatty acid derivative. This lipid material or carboxylic acid material is converted into an alkali metal salt. The alkali metal salt is then used in an anolyte as part of an electrolytic cell. The electrolytic cell may include an alkali ion conducting membrane (such as a NaSICON membrane). When the cell is operated, the alkali metal salt of the carboxylic acid decarboxylates and forms radicals. Such radicals are then bonded to other radicals, thereby producing a coupled radical product such as a hydrocarbon. The produced hydrocarbon may be, for example, saturated, unsaturated, branched, or unbranched, depending upon the starting material.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: February 11, 2014
    Assignee: Ceramatec, Inc.
    Inventors: Mukund Karanjikar, Sai Bhavaraju, Ashok V. Joshi, Pallavi Chitta, David Joel Hunt
  • Publication number: 20140030571
    Abstract: The present invention provides a secondary cell having a negative electrode compartment and a positive electrode compartment, which are separated by an alkali ion conductive electrolyte membrane. An alkali metal negative electrode disposed in the negative electrode compartment oxidizes to release alkali ions as the cell discharges and reduces the alkali ions to alkali metal during recharge. The positive electrode compartment includes a positive electrode contacting a positive electrode solution that includes an alkali metal compound and a metal halide. The alkali metal compound can be selected from an alkali halide and an alkali pseudo-halide. During discharge, the metal ion reduces to form metal plating on the positive electrode. As the cell charges, the metal plating oxidizes to strip the metal plating to form metal halide or pseudo halide or corresponding metal complex.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 30, 2014
    Applicant: Ceramatec, Inc.
    Inventors: Sai Bhavaraju, Mathew Robins, Chett Boxley
  • Publication number: 20140018753
    Abstract: A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier.
    Type: Application
    Filed: June 7, 2013
    Publication date: January 16, 2014
    Applicant: KALYPTO MEDICAL, INC.
    Inventors: Ashok V. Joshi, John Howard Gordon, Sai Bhavaraju, Troy C. Dayton, Jeremy Heiser
  • Publication number: 20140008239
    Abstract: A process of producing metal that includes adding a quantity of a alkoxide (M(OR)x) or another metal salt to a cathode compartment of an electrolytic cell and electrolyzing the cell. This electrolyzing causes a quantity of alkali metal ions to migrate into the cathode compartment and react with the metal alkoxide, thereby producing metal and an alkali metal alkoxide. In some embodiments, the alkali metal is sodium such that the sodium ions will pass through a sodium ion selective membrane, such as a NaSICON membrane, into the cathode compartment.
    Type: Application
    Filed: July 3, 2013
    Publication date: January 9, 2014
    Inventor: Sai Bhavaraju
  • Publication number: 20130284607
    Abstract: A method that produces coupled radical products from biomass. The method involves obtaining a lipid or carboxylic acid material from the biomass. This material may be a carboxylic acid, an ester of a carboxylic acid, a triglyceride of a carboxylic acid, or a metal salt of a carboxylic acid, or any other fatty acid derivative. This lipid material or carboxylic acid material is converted into an alkali metal salt. The alkali metal salt is then used in an anolyte as part of an electrolytic cell. The electrolytic cell may include an alkali ion conducting membrane (such as a NaSICON membrane). When the cell is operated, the alkali metal salt of the carboxylic acid decarboxylates and forms radicals. Such radicals are then bonded to other radicals, thereby producing a coupled radical product such as a hydrocarbon. The produced hydrocarbon may be, for example, saturated, unsaturated, branched, or unbranched, depending upon the starting material.
    Type: Application
    Filed: June 28, 2013
    Publication date: October 31, 2013
    Inventors: Sai Bhavaraju, Ashok V. Joshi, Mukund Karanjikar, David Joel Hunt, Pallavi Chitta
  • Publication number: 20130277211
    Abstract: An apparatus for cleaning and/or disinfecting surfaces and objects is disclosed herein. In one embodiment, such an apparatus includes a spray bottle that is refillable with water. A dispenser is integrated into the spray bottle to dispense a soluble material into the water to produce a solution. The soluble material includes at least one of a cleaning agent and a disinfecting agent. The soluble material is provided in a quantity sufficient to last several refills of the spray bottle.
    Type: Application
    Filed: April 4, 2013
    Publication date: October 24, 2013
    Inventors: Ashok V. Joshi, Sai Bhavaraju
  • Publication number: 20130245347
    Abstract: A method for alkylating aromatic compounds is described using an electrochemical decarboxylation process. This process produces aryl-alkyl compounds that have properties useful in Group V lubricants (and other products) from abundant and economical carboxylic acids. The process presented here is also advantageous as it is conducted at moderate temperatures and conditions, without the need of a catalyst. The electrochemical decarboxylation has only H2 and CO2 as its by-products, as opposed to halide by-products.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 19, 2013
    Applicant: CERAMATEC, INC.
    Inventors: James Mosby, Patrick McGuire, Sai Bhavaraju, Mukund Karanjikar
  • Patent number: 8506789
    Abstract: A method that produces coupled radical products from biomass. The method involves obtaining a lipid or carboxylic acid material from the biomass. This material may be a carboxylic acid, an ester of a carboxylic acid, a triglyceride of a carboxylic acid, or a metal salt of a carboxylic acid, or any other fatty acid derivative. This lipid material or carboxylic acid material is converted into an alkali metal salt. The alkali metal salt is then used in an anolyte as part of an electrolytic cell. The electrolytic cell may include an alkali ion conducting membrane (such as a NaSICON membrane). When the cell is operated, the alkali metal salt of the carboxylic acid decarboxylates and forms radicals. Such radicals are then bonded to other radicals, thereby producing a coupled radical product such as a hydrocarbon. The produced hydrocarbon may be, for example, saturated, unsaturated, branched, or unbranched, depending upon the starting material.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: August 13, 2013
    Assignee: Ceramatec, Inc.
    Inventors: Sai Bhavaraju, Mukund Karanjikar, Ashok V. Joshi, David Joel Hunt, Pallavi Chitta
  • Patent number: 8460255
    Abstract: A wound therapy device is disclosed. The wound therapy device may include a housing for covering at least a portion of a wound and for sealing to a body surface of a patient. The housing may also include a liquid collector for retaining liquid therein and a vacuum connection for coupling to a vacuum source. The vacuum connection may be in gaseous communication with the liquid collector. The vacuum connection may be separated from the liquid collector by a liquid barrier.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: June 11, 2013
    Assignee: Kalypto Medical, Inc.
    Inventors: Ashok V. Joshi, John Howard Gordon, Sai Bhavaraju, Troy C. Dayton, Jeremy Heiser
  • Patent number: 8382974
    Abstract: A sodium sensor to measure a concentration of sodium methylate in methanol. The sensor assembly includes a solid alkali ion conducting membrane, a reference electrode, and a measurement electrode. The solid alkali ion conducting membrane transports ions between two alkali-containing solutions, including an aqueous solution and a non-aqueous solution. The reference electrode is at least partially within an alkali halide solution of a known alkali concentration on a first side of the solid alkali ion conducting membrane. The measurement electrode is on a second side of the solid alkali ion conducting membrane. The measurement electrode exhibits a measurable electrical characteristic corresponding to a measured alkali concentration within the non-aqueous solution, to which the measurement electrode is exposed.
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: February 26, 2013
    Assignee: Ceramatec, Inc.
    Inventors: Sai Bhavaraju, Shekar Balagopal, Justin Pendelton, Peter Wall