Patents by Inventor Trideep Rajale

Trideep Rajale 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).

  • Separation, recovery and upgrading of biomass derived 2,3-butanediol
    Patent number: 11565989
    Abstract: The invention relates to a two-way approach to isolate, recover and upgrade 2,3-Butanediol (2,3-BDO) from fermentation broth. A complete separation and recovery process for 2,3-BDO using acetalization and trans-acetalization sequence. Acetalization with butyraldehyde using heterogeneous catalysts, either Amberlyst-15® or Nafion NR50®, efficiently isolates 2,3-BDO as phase-separated protected dioxolane. The approach provides significant process advantages with easy product recovery and high recyclability of the catalyst. Trans-acetalization of dioxolane with methanol (methanolysis) followed by distillation of acetal, yielded very high purity 2,3-BDO with about 90% isolated yield. Alternatively, dioxolane is used in a process direct to methyl ethyl ketone (MEK) as a BDO synthon allowing for recovery of the aldehyde.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: January 31, 2023
    Inventors: Cameron Moore, Trideep Rajale, Karthikeyan K. Ramasamy, Andrew Sutton
  • SEPARATION, RECOVERY AND UPGRADING OF BIOMASS DERIVED 2,3-BUTANEDIOL
    Publication number: 20220135507
    Abstract: The invention relates to a two-way approach to isolate, recover and upgrade 2,3-Butanediol (2,3-BDO) from fermentation broth. A complete separation and recovery process for 2,3-BDO using acetalization and trans-acetalization sequence. Acetalization with butyraldehyde using heterogeneous catalysts, either Amberlyst-15® or Nafion NR50®, efficiently isolates 2,3-BDO as phase-separated protected dioxolane. The approach provides significant process advantages with easy product recovery and high recyclability of the catalyst. Trans-acetalization of dioxolane with methanol (methanolysis) followed by distillation of acetal, yielded very high purity 2,3-BDO with about 90% isolated yield. Alternatively, dioxolane is used in a process direct to methyl ethyl ketone (MEK) as a BDO synthon allowing for recovery of the aldehyde.
    Type: Application
    Filed: November 3, 2020
    Publication date: May 5, 2022
    Applicant: U.S. Department of Energy
    Inventors: Cameron Moore, Trideep Rajale, Karthikeyan K. Ramasamy, Andrew Sutton