Patents by Inventor Parthasarathi Ramakrishnan

Parthasarathi Ramakrishnan 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).

  • AMMONIUM BASED IONIC LIQUIDS USEFUL FOR LIGNOCELLULOSIC PROCESSING
    Publication number: 20210155964
    Abstract: Methods and compositions are provided for ionic liquid processing of biomass.
    Type: Application
    Filed: February 1, 2021
    Publication date: May 27, 2021
    Inventors: Parthasarathi Ramakrishnan, Tanmoy Dutta, Blake Simmons, Seema Singh
  • Ammonium based ionic liquids useful for lignocellulosic processing
    Patent number: 10907184
    Abstract: Methods and compositions are provided for ionic liquid processing of biomass.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: February 2, 2021
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Parthasarathi Ramakrishnan, Tanmoy Dutta, Blake Simmons, Seema Singh
  • Compositions and methods for the dissolution and depolymerization of lignin
    Patent number: 10703770
    Abstract: The present invention provides for a method for dissolving and/or depolymerizing lignin comprising: (a) providing a composition comprising lignin, (b) contacting the composition with a strong hydrogen donor, such as a polyol, to form a first solution, (c) incubating the first solution at a temperature equal to or less than 100° C., whereby at least 20% by weight of the lignin is dissolved, (d) optionally introducing an oxidation agent to the first solution to form a second solution, wherein the temperature of the second solution is equal to or less than 100° C., whereby lignin is depolymerized, and (e) optionally introducing an anti-solvent to the second solution to precipitate the depolymerized lignin.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: July 7, 2020
    Assignee: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Jian Sun, Tanmoy Dutta, Parthasarathi Ramakrishnan, Blake A. Simmons, Seema Singh
  • Novel protic or phosphate-based ionic liquids useful for lignocellulosic processing
    Publication number: 20190292572
    Abstract: The present invention provides for novel protic ionic liquids (PIL) or phosphate-based ionic liquid (PBIL) useful for lignocellulosic processing described herein. The novel protic ionic liquids are capable of pretreatment of lignocellulosic biomass over a wide range of pH.
    Type: Application
    Filed: February 25, 2019
    Publication date: September 26, 2019
    Applicant: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Parthasarathi Ramakrishnan, Jian Sun, Tanmoy Dutta, Blake A. Simmons, Seema Singh
  • AMMONIUM BASED IONIC LIQUIDS USEFUL FOR LIGNOCELLULOSIC PROCESSING
    Publication number: 20180355392
    Abstract: Methods and compositions are provided for ionic liquid processing of biomass.
    Type: Application
    Filed: November 23, 2016
    Publication date: December 13, 2018
    Inventors: Parthasarathi Ramakrishnan, Tanmoy Dutta, Blake Simmons, Seema Singh
  • Novel compositions and methods for the dissolution and depolymerization of lignin
    Publication number: 20170349617
    Abstract: The present invention provides for a method for dissolving and/or depolymerizing lignin comprising: (a) providing a composition comprising lignin, (b) contacting the composition with a strong hydrogen donor, such as a polyol, to form a first solution, (c) incubating the first solution at a temperature equal to or less than 100° C., whereby at least 20% by weight of the lignin is dissolved, (d) optionally introducing an oxidation agent to the first solution to form a second solution, wherein the temperature of the second solution is equal to or less than 100° C., whereby lignin is depolymerized, and (e) optionally introducing an anti-solvent to the second solution to precipitate the depolymerized lignin.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 7, 2017
    Applicant: National Technology & Engineering Solutions of Sandia, LLC
    Inventors: Jian Sun, Tanmoy Dutta, Parthasarathi Ramakrishnan, Blake A. Simmons, Seema Singh