Patents by Inventor Sanjeev Gajjela

Sanjeev Gajjela 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).

  • Patent number: 11781077
    Abstract: Described is a novel process for disaggregating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction (HAF), fermentable pyrolytic sugars and phenolics based products in a highly economical and energy efficient manner. Phase separation of the esterified pyrolysis oil after an oxidative pre-treatment and the quantitative recovery of the separate fractions is described. Phase separation uses batch as well as continuous reactor systems. The resulting HAF is an energy dense, thermally stable, water free, non-corrosive to carbon steel, and is a free flowing liquid suitable for combustion and for upgrading to transportation fuels. Pyrolytic sugars which are mainly anhydrosugars can be further converted by fermentation to ethanol or other products. Monomeric phenols are useful industrial intermediates and the organic acids in the original pyrolysis oil are mainly recovered as esters of the separation solvents.
    Type: Grant
    Filed: February 9, 2022
    Date of Patent: October 10, 2023
    Assignee: ALDER ENERGY, LLC
    Inventors: Sanjeev Gajjela, Ralph Phillips Overend, Zhiheng Wu, Zsuzsa Ajsa Mayer, Haonan Wu, Jose Antonio Medrano Catalan
  • Publication number: 20230049368
    Abstract: Described is a novel process for fractionating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction and water-soluble organics in an economical and energy efficient manner. Using the concepts of solvents and anti-solvent behaviors to separate the pyrolysis oil, which is an emulsion, a method utilizing minimal quantities of solvents and water is proposed, by comparison with the existing methods to isolate the hydrophobic aromatic fraction, there is a volume reduction of greater than 50:1. Additionally, there is a significant time saving over the 24 hours for the accepted method as a solvent, and the anti-solvent system is spontaneous.
    Type: Application
    Filed: September 14, 2022
    Publication date: February 16, 2023
    Inventors: Sanjeev Gajjela, Ralph Phillips Overend, Javier Gonzalez Catalan, Zhiheng Wu, Patricia LaPuente, Jose Antonio Medrano Catalan
  • Publication number: 20220389333
    Abstract: Described is a novel process for disaggregating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction (HAF), fermentable pyrolytic sugars and phenolics based products in a highly economical and energy efficient manner. Phase separation of the esterified pyrolysis oil after an oxidative pre-treatment and the quantitative recovery of the separate fractions is described. Phase separation uses batch as well as continuous reactor systems. The resulting HAF is an energy dense, thermally stable, water free, non-corrosive to carbon steel, and is a free flowing liquid suitable for combustion and for upgrading to transportation fuels. Pyrolytic sugars which are mainly anhydrosugars can be further converted by fermentation to ethanol or other products. Monomeric phenols are useful industrial intermediates and the organic acids in the original pyrolysis oil are mainly recovered as esters of the separation solvents.
    Type: Application
    Filed: February 9, 2022
    Publication date: December 8, 2022
    Applicant: ALDER ENERGY, LLC
    Inventors: Sanjeev GAJJELA, Ralph Phillips OVEREND, Zhiheng WU, MAYER Zsuzsa Ajsa, WU Haonan, Jose Antonio Medrano CATALAN
  • Patent number: 11466220
    Abstract: Described is a novel process for fractionating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction and water-soluble organics in an economical and energy efficient manner. Using the concepts of solvents and anti-solvent behaviours to separate the pyrolysis oil, which is an emulsion, a method utilising minimal quantities of solvents and water is proposed, By comparison with the existing methods to isolate the hydrophobic aromatic fraction, there is a volume reduction of greater than 50:1. Additionally, there is a significant time saving over the 24 hours for the accepted method as a solvent, and the anti-solvent system is spontaneous.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: October 11, 2022
    Assignee: ALDER ENERGY, LLC
    Inventors: Sanjeev Gajjela, Ralph Phillips Overend, Javier Gonzalez Catalan, Zhiheng Wu, Patricia Lapuente, Jose Antonio Medrano Catalan
  • Patent number: 11421165
    Abstract: Described is a novel process for disaggregating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction (HAF), fermentable pyrolytic sugars and phenolics based products in a highly economical and energy efficient manner. Phase separation of the esterified pyrolysis oil after an oxidative pre-treatment and the quantitative recovery of the separate fractions is described. Phase separation uses batch as well as continuous reactor systems. The resulting HAF is an energy dense, thermally stable, water free, non-corrosive to carbon steel, and is a free flowing liquid suitable for combustion and for upgrading to transportation fuels. Pyrolytic sugars which are mainly anhydrosugars can be further converted by fermentation to ethanol or other products. Monomeric phenols are useful industrial intermediates and the organic acids in the original pyrolysis oil are mainly recovered as esters of the separation solvents.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: August 23, 2022
    Assignee: ALDER ENERGY, LLC
    Inventors: Sanjeev Gajjela, Ralph Phillips Overend, Zhiheng Wu, Mayer Zsuzsa Ajsa, Wu Haonan, Jose Antonio Medrano Catalan
  • Patent number: 11279889
    Abstract: Described is a novel process for disaggregating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction (HAF), fermentable pyrolytic sugars and phenolics based products in a highly economical and energy efficient manner. Phase separation of the esterified pyrolysis oil after an oxidative pre-treatment and the quantitative recovery of the separate fractions is described. Phase separation uses batch as well as continuous reactor systems. The resulting HAF is an energy dense, thermally stable, water free, non-corrosive to carbon steel, and is a free flowing liquid suitable for combustion and for upgrading to transportation fuels. Pyrolytic sugars which are mainly anhydrosugars can be further converted by fermentation to ethanol or other products. Monomeric phenols are useful industrial intermediates and the organic acids in the original pyrolysis oil are mainly recovered as esters of the separation solvents.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: March 22, 2022
    Assignee: ALDER ENERGY, LLC
    Inventors: Sanjeev Gajjela, Ralph Phillips Overend, Zhiheng Wu, Mayer Zsuzsa Ajsa, Wu Haonan, Jose Antonio Medrano Catalan
  • Publication number: 20220010138
    Abstract: The invention provides a method for preparing a binder precursor, the method comprising the steps of: i) mixing (A) fungi or glucan and (B) starch with an alkaline agent in the presence of an aqueous solvent system to form an alkaline composition; ii) mixing the alkaline composition with an acidic agent to form a mixture; and iii) drying the mixture and forming a powder therefrom, so as to form a powdered binder precursor.
    Type: Application
    Filed: November 21, 2019
    Publication date: January 13, 2022
    Applicant: Materialize.X Limited
    Inventors: Haidin Farmin Rashid, Adrien Stephane Hitz, Sanjeev Gajjela
  • Publication number: 20210309924
    Abstract: Described is a novel process for disaggregating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction (HAF), fermentable pyrolytic sugars and phenolics based products in a highly economical and energy efficient manner. Phase separation of the esterified pyrolysis oil after an oxidative pre-treatment and the quantitative recovery of the separate fractions is described. Phase separation uses batch as well as continuous reactor systems. The resulting HAF is an energy dense, thermally stable, water free, non-corrosive to carbon steel, and is a free flowing liquid suitable for combustion and for upgrading to transportation fuels. Pyrolytic sugars which are mainly anhydrosugars can be further converted by fermentation to ethanol or other products. Monomeric phenols are useful industrial intermediates and the organic acids in the original pyrolysis oil are mainly recovered as esters of the separation solvents.
    Type: Application
    Filed: June 10, 2016
    Publication date: October 7, 2021
    Inventors: Sanjeev GAJJELA, Ralph Phillips OVEREND, Zhiheng WU, MAYER Zsuzsa Ajsa, WU Haonan, Jose Antonio Medrano CATALAN
  • Publication number: 20190330540
    Abstract: Described is a novel process for fractionating biomass pyrolysis oil quantitatively into energy dense hydrophobic aromatic fraction and water-soluble organics in an economical and energy efficient manner. Using the concepts of solvents and anti-solvent behaviours to separate the pyrolysis oil, which is an emulsion, a method utilising minimal quantities of solvents and water is proposed, By comparison with the existing methods to isolate the hydrophobic aromatic fraction, there is a volume reduction of greater than 50:1. Additionally, there is a significant time saving over the 24 hours for the accepted method as a solvent, and the anti-solvent system is pontaneous.
    Type: Application
    Filed: June 21, 2017
    Publication date: October 31, 2019
    Inventors: Sanjeev GAJJELA, Ralph Phillips OVEREND, Javier Gonzalez CATALAN, Zhiheng WU, Patricia LAPUENTE, Jose Antonio Medrano CATALAN
  • Patent number: 8603199
    Abstract: This invention relates to a method and device to produce esterified, olefinated/esterified, or thermochemolytic reacted bio-oils as fuels. The olefinated/esterified product may be utilized as a biocrude for input to a refinery, either alone or in combination with petroleum crude oils. The bio-oil esterification reaction is catalyzed by addition of alcohol and acid catalyst. The olefination/esterification reaction is catalyzed by addition of resin acid or other heterogeneous catalyst to catalyze olefins added to previously etherified bio-oil; the olefins and alcohol may also be simultaneously combined and catalyzed by addition of resin acid or other heterogeneous catalyst to produce the olefinated/esterified product.
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: December 10, 2013
    Assignee: Mississippi State University
    Inventors: Philip H. Steele, Charles U. Pittman, Jr., Leonard L. Ingram, Jr., Sanjeev Gajjela, Zhijun Zhang, Priyanka Bhattacharya
  • Publication number: 20110192072
    Abstract: This invention relates to a method and device to produce esterified, olefinated/esterified, or thermochemolytic reacted bio-oils as fuels. The olefinated/esterified product may be utilized as a biocrude for input to a refinery, either alone or in combination with petroleum crude oils. The bio-oil esterification reaction is catalyzed by addition of alcohol and acid catalyst. The olefination/esterification reaction is catalyzed by addition of resin acid or other heterogeneous catalyst to catalyze olefins added to previously etherified bio-oil; the olefins and alcohol may also be simultaneously combined and catalyzed by addition of resin acid or other heterogeneous catalyst to produce the olefinated/esterified product.
    Type: Application
    Filed: October 1, 2010
    Publication date: August 11, 2011
    Applicant: MISSISSIPPI STATE UNIVERSITY
    Inventors: Philip H. Steele, Charles U. Pittman, JR., Leonard L. Ingram, JR., Sanjeev Gajjela, Zhijun Zhang, Priyanka Bhattacharya