Patents by Inventor Nitin Shashikant Parekh

Nitin Shashikant Parekh 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: 20240026115
    Abstract: A waste polyester material is prepared for recycling by dissolving the material in a solution comprising hexafluoroisopropyl (HFIPA) and a chlorinated hydrocarbon, such as dichloromethane (DCM) and/or an aromatic hydrocarbon, such as toluene or xylene, to form a dissolved polyester sample. The dissolved polyester may be prepared for recycling by evaporation, spray drying, and/or precipitation, which produces a purified solid polyester product. The dissolution solution, which is separated from the purified solid polyester product, is also recycled through distillation with purification.
    Type: Application
    Filed: October 1, 2023
    Publication date: January 25, 2024
    Inventors: Gregory Breyta, Robert David Allen, Nitin Shashikant Parekh
  • Patent number: 11807725
    Abstract: A waste polyester material is prepared for recycling by dissolving the material in a solution comprising hexafluoroisopropyl (HFIPA) and a chlorinated hydrocarbon, such as dichloromethane (DCM) and/or an aromatic hydrocarbon, such as toluene or xylene, to form a dissolved polyester sample. The dissolved polyester may be prepared for recycling by evaporation, spray drying, and/or precipitation, which produces a purified solid polyester product. The dissolution solution, which is separated from the purified solid polyester product, is also recycled through distillation with purification.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: November 7, 2023
    Assignee: International Business Machines Corporation
    Inventors: Gregory Breyta, Robert David Allen, Nitin Shashikant Parekh
  • Publication number: 20220169823
    Abstract: A waste polyester material is prepared for recycling by dissolving the material in a solution comprising hexafluoroisopropyl (HFIPA) and a chlorinated hydrocarbon, such as dichloromethane (DCM) and/or an aromatic hydrocarbon, such as toluene or xylene, to form a dissolved polyester sample. The dissolved polyester may be prepared for recycling by evaporation, spray drying, and/or precipitation, which produces a purified solid polyester product. The dissolution solution, which is separated from the purified solid polyester product, is also recycled through distillation with purification.
    Type: Application
    Filed: December 1, 2021
    Publication date: June 2, 2022
    Inventors: Gregory Breyta, Robert David Allen, Nitin Shashikant Parekh