Patents by Inventor Sagar B. Gadewar

Sagar B. Gadewar 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: 20230322651
    Abstract: A method of producing a catalyst comprises forming a decomposed material comprising a decomposed hydrotalcite, a decomposed hydrocalumite, or a combination of both, combining the decomposed material with a mixture to form a catalyst mixture, and heating the catalyst mixture to convert the metal salt to a metal oxide. The mixture comprises a metal salt and a chelating agent, and the resulting metal oxide combined with the decomposed material forms the catalyst.
    Type: Application
    Filed: June 12, 2023
    Publication date: October 12, 2023
    Inventors: Brian C. VICENTE, Peter K. STOIMENOV, Sagar B. GADEWAR
  • Patent number: 11713289
    Abstract: A method of producing a catalyst comprises forming a decomposed material comprising a decomposed hydrotalcite, a decomposed hydrocalumite, or a combination of both, combining the decomposed material with a mixture to form a catalyst mixture, and heating the catalyst mixture to convert the metal salt to a metal oxide. The mixture comprises a metal salt and a chelating agent, and the resulting metal oxide combined with the decomposed material forms the catalyst.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: August 1, 2023
    Assignee: VIRIDIS CHEMICAL, LLC
    Inventors: Brian C. Vicente, Peter K. Stoimenov, Sagar B. Gadewar
  • Publication number: 20210147327
    Abstract: A method of producing a catalyst comprises forming a decomposed material comprising a decomposed hydrotalcite, a decomposed hydrocalumite, or a combination of both, combining the decomposed material with a mixture to form a catalyst mixture, and heating the catalyst mixture to convert the metal salt to a metal oxide. The mixture comprises a metal salt and a chelating agent, and the resulting metal oxide combined with the decomposed material forms the catalyst.
    Type: Application
    Filed: April 16, 2019
    Publication date: May 20, 2021
    Inventors: Brian C. VICENTE, Peter K. STOIMENOV, Sagar B. GADEWAR
  • Patent number: 10081588
    Abstract: A reactive distillation method comprises introducing a feed stream to a reactive distillation column, wherein the feed stream comprises ethanol, contacting the feed stream with one or more catalysts in the reactive distillation column during a distillation, and removing butyl acetate during the distillation from the reactive distillation column as a bottoms stream. The feed stream reacts in the presence of the one or more catalysts to produce a reaction product comprising ethyl acetate, butanol, and water, wherein the butanol and the ethyl acetate react to produce a reaction product comprising the butyl acetate.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: September 25, 2018
    Assignee: ResCurve, LLC
    Inventors: Sagar B. Gadewar, Brian Christopher Vicente, Peter K. Stoimenov
  • Publication number: 20160297737
    Abstract: A reactive distillation method comprises introducing a feed stream to a reactive distillation column, wherein the feed stream comprises ethanol, contacting the feed stream with one or more catalysts in the reactive distillation column during a distillation, and removing butyl acetate during the distillation from the reactive distillation column as a bottoms stream. The feed stream reacts in the presence of the one or more catalysts to produce a reaction product comprising ethyl acetate, butanol, and water, wherein the butanol and the ethyl acetate react to produce a reaction product comprising the butyl acetate.
    Type: Application
    Filed: December 3, 2014
    Publication date: October 13, 2016
    Inventors: Sagar B. GADEWAR, Brian Christopher VICENTE, Peter K. STOIMENOV
  • Patent number: 9447018
    Abstract: A method of purifying an ethyl acetate stream comprises contacting an inlet stream with a solvent, transferring at least a portion of the impurity compound from the inlet stream into the solvent to form an extract and a purified product, separating the extract from the purified product, separating the portion of the impurity compound from the extract, forming an impurities stream and a regenerated solvent, and recycling at least a portion of the regenerated solvent to contact the inlet stream. The inlet stream comprises ethyl acetate and an impurity compound, and the extract comprises the solvent and the portion of the impurity compound transferred from the inlet stream.
    Type: Grant
    Filed: September 10, 2013
    Date of Patent: September 20, 2016
    Assignee: Greenyug, LLC
    Inventors: Sagar B. Gadewar, Peter K. Stoimenov
  • Patent number: 9079851
    Abstract: A reactive distillation method comprises introducing an feed stream comprising ethanol to a reactive distillation column, contacting the feed stream with a catalyst in the reactive distillation column during a distillation, where the feed stream reacts in the presence of the catalyst to produce a reaction product comprising ethyl acetate and hydrogen, removing ethyl acetate during the distillation from the reactive distillation column as a bottoms stream, and removing hydrogen during the distillation from the reactive distillation column as an overhead stream.
    Type: Grant
    Filed: February 1, 2012
    Date of Patent: July 14, 2015
    Assignee: Greenyug, LLC
    Inventors: Sagar B. Gadewar, Brian Christopher Vicente, Robert Elliot Norton, Michael Francis Doherty
  • Patent number: 9018427
    Abstract: A reactive distillation method comprises introducing a feed stream to a reactive distillation column, contacting the feed stream with one or more catalysts in the reactive distillation column during a distillation, and removing one or more higher alcohols during the distillation from the reactive distillation column as a bottoms stream. The feed stream comprises one or more alpha hydrogen alcohols, and the feed stream reacts in the presence of the one or more catalysts to produce a reaction product comprising the one or more higher alcohols.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: April 28, 2015
    Assignee: Greenyug, LLC
    Inventors: Sagar B. Gadewar, Brian Christopher Vicente, Peter K. Stoimenov, Vivek Julka
  • Publication number: 20140235901
    Abstract: A reactive distillation method comprises introducing a feed stream to a reactive distillation column, contacting the feed stream with one or more catalysts in the reactive distillation column during a distillation, and removing one or more higher alcohols during the distillation from the reactive distillation column as a bottoms stream. The feed stream comprises one or more alpha hydrogen alcohols, and the feed stream reacts in the presence of the one or more catalysts to produce a reaction product comprising the one or more higher alcohols.
    Type: Application
    Filed: February 18, 2014
    Publication date: August 21, 2014
    Applicant: Greenyug, LLC
    Inventors: Sagar B. GADEWAR, Brian Christopher VICENTE, Peter K. STOIMENOV, Vivek JULKA
  • Patent number: 8802908
    Abstract: Process and systems for alkane bromination and, in one or more embodiments, to separate, parallel methane and higher alkanes bromination in a bromine-based process. An embodiment discloses a bromine-based process for converting alkanes to liquid hydrocarbons that includes alkanes bromination, the process comprising: brominating a methane stream comprising methane and having less than about 2 mol % of ethane to form methane bromination products comprising brominated methane and a first fraction of hydrogen bromide; separately brominating a C2+ alkane stream comprising an alkane having 2 or more carbon atoms to form C2+ methane bromination products comprising brominated alkanes having 2 or more carbon atoms and a second fraction of hydrogen bromide; and catalytically reacting at least a portion of the brominated methane and the brominated alkanes to form higher molecular hydrocarbons.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: August 12, 2014
    Assignee: Marathon GTF Technology, Ltd.
    Inventors: John J. Waycullis, Sagar B. Gadewar, Raphael Thomas
  • Publication number: 20140012037
    Abstract: A method of purifying an ethyl acetate stream comprises contacting an inlet stream with a solvent, transferring at least a portion of the impurity compound from the inlet stream into the solvent to form an extract and a purified product, separating the extract from the purified product, separating the portion of the impurity compound from the extract, forming an impurities stream and a regenerated solvent, and recycling at least a portion of the regenerated solvent to contact the inlet stream. The inlet stream comprises ethyl acetate and an impurity compound, and the extract comprises the solvent and the portion of the impurity compound transferred from the inlet stream.
    Type: Application
    Filed: September 10, 2013
    Publication date: January 9, 2014
    Inventors: Sagar B. Gadewar, Peter K. Stoimenov
  • Patent number: 8562921
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one and/or n-butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: October 22, 2013
    Assignee: Greenyug, LLC.
    Inventor: Sagar B. Gadewar
  • Patent number: 8558025
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one, butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: October 15, 2013
    Assignee: Greenyug, LLC
    Inventor: Sagar B Gadewar
  • Publication number: 20130197266
    Abstract: A reactive distillation method comprises introducing an feed stream comprising ethanol to a reactive distillation column, contacting the feed stream with a catalyst in the reactive distillation column during a distillation, where the feed stream reacts in the presence of the catalyst to produce a reaction product comprising ethyl acetate and hydrogen, removing ethyl acetate during the distillation from the reactive distillation column as a bottoms stream, and removing hydrogen during the distillation from the reactive distillation column as an overhead stream.
    Type: Application
    Filed: February 1, 2012
    Publication date: August 1, 2013
    Applicant: GREENYUG, LLC
    Inventors: Sagar B. GADEWAR, Brian Christopher VICENTE, Robert Elliot NORTON, Michael Francis DOHERTY
  • Patent number: 8449849
    Abstract: A method comprising providing a halogen stream; providing a first alkane stream; reacting at least a portion of the halogen stream with at least a portion of the first alkane stream to form a halogenated stream, wherein the halogenated stream comprises alkyl monohalides, alkyl polyhalides, and a hydrogen halide; providing a second alkane stream; and reacting at least a portion of the second alkane stream with at least a portion of the alkyl polyhalides to create at least some additional alkyl monohalides.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: May 28, 2013
    Assignee: GRT, Inc.
    Inventors: Sagar B. Gadewar, Michael D. Wyrsta, Philip Grosso, Aihua Zhang, Eric W. McFarland, Zachary J. A. Komon, Jeffrey H. Sherman
  • Publication number: 20120178962
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one and/or n-butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Application
    Filed: March 16, 2012
    Publication date: July 12, 2012
    Applicant: GREENYUG, LLC
    Inventor: Sagar B. GADEWAR
  • Publication number: 20120035390
    Abstract: A process for the production of high purity ethyl acetate from ethanol is described. The process involves reacting ethanol over a suitable catalyst in a reactive distillation column. The reactive distillation setup allows overcoming the reaction equilibrium for increased conversion of ethanol. Hydrogen is removed as the distillate and ethyl acetate is obtained as a bottoms product from the reactive distillation column. A feed of hydrogen at the bottom of the column and a suitable hydrogenation catalyst placed at the bottom of the column allows for a significant reduction of impurities such as butan-2-one, butyraldehyde in the ethyl acetate product. Adding side reactors to the reactive distillation column allows additional catalyst holdup for improved reactant conversion.
    Type: Application
    Filed: October 20, 2010
    Publication date: February 9, 2012
    Inventor: Sagar B. Gadewar
  • Publication number: 20120009090
    Abstract: A method comprising providing a halogen stream; providing a first alkane stream; reacting at least a portion of the halogen stream with at least a portion of the first alkane stream to form a halogenated stream, wherein the halogenated stream comprises alkyl monohalides, alkyl polyhalides, and a hydrogen halide; providing a second alkane stream; and reacting at least a portion of the second alkane stream with at least a portion of the alkyl polyhalides to create at least some additional alkyl monohalides.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 12, 2012
    Inventors: Sagar B. Gadewar, Michael D. Wyrsta, Philip Grosso, Aihua Zhang, Eric W. McFarland, Zachary J.A. Komon, Jeffrey H. Sherman
  • Patent number: 8053616
    Abstract: A method comprising providing a halogen stream; providing a first alkane stream; reacting at least a portion of the halogen stream with at least a portion of the first alkane stream to form a halogenated stream, wherein the halogenated stream comprises alkyl monohalides, alkyl polyhalides, and a hydrogen halide; providing a second alkane stream; and reacting at least a portion of the second alkane stream with at least a portion of the alkyl polyhalides to create at least some additional alkyl monohalides.
    Type: Grant
    Filed: July 1, 2009
    Date of Patent: November 8, 2011
    Assignee: GRT, Inc.
    Inventors: Sagar B. Gadewar, Michael D. Wyrsta, Philip Grosso, Aihua Zhang, Eric W. McFarland, Zachary J. A. Komon, Jeffrey H. Sherman
  • Patent number: 7883568
    Abstract: A process is provided for separating one or more light gases from bromine or chlorine using one or more physical separations and contact with a chemical scrubber to recover additional halogen. In one aspect, the process comprises (a) providing a feed of halogen containing one or more light gases to a distillation column or flash vaporizer; (b) operating the distillation column or flash vaporizer to separate the feed into (i) a first liquid containing a major amount of halogen and no more than a minor amount of light gas(es), and (ii) a first vapor containing a major amount of light gas(es) and no more than a minor amount of halogen; and (c) providing the vapor to a chemical scrubber to recover halogen from the vapor.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: February 8, 2011
    Assignee: GRT, Inc.
    Inventors: Sagar B. Gadewar, Peter K. Stoimenov, Philip Grosso, Eric W. McFarland, Ashley W. Breed, Michael J. Weiss, Michael D. Wyrsta