Patents by Inventor Ritopa Das

Ritopa Das 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).

  • BIODEGRADABLE PIEZOELECTRIC NANOFIBER SCAFFOLD FOR BONE OR TISSUE REGENERATION
    Publication number: 20230270554
    Abstract: A scaffold comprised of a plurality of PLLA layers, which may include stem cells, for regenerating bone or tissue. The PLLA layers are separated by a plurality of hydrogel layers. The PLLA layers comprise a nanofiber mesh having a piezoelectric constant to apply an electrical charge to the bone or tissue upon application of ultrasound energy.
    Type: Application
    Filed: May 2, 2023
    Publication date: August 31, 2023
    Inventors: Thanh Duc Nguyen, Ritopa Das
  • Biodegradable piezoelectric nanofiber scaffold for bone or tissue regeneration
    Patent number: 11678989
    Abstract: A scaffold comprised of a plurality of PLLA layers, which may include stem cells, for regenerating bone or tissue. The PLLA layers are separated by a plurality of hydrogel layers. The PLLA layers comprise a nanofiber mesh having a piezoelectric constant to apply an electrical charge to the bone or tissue upon application of ultrasound energy.
    Type: Grant
    Filed: March 2, 2020
    Date of Patent: June 20, 2023
    Assignee: UNIVERSITY OF CONNECTICUT
    Inventors: Thanh Duc Nguyen, Ritopa Das
  • BIODEGRADABLE ANTIBACTERIAL PIEZOELECTRIC WOUND DRESSING
    Publication number: 20210378949
    Abstract: Methods, systems, and apparatus, including combination therapy systems for the treatment of infections. These systems comprising: an ultrasound device capable of producing ultrasonic acoustic pressure; and a biodegradable piezoelectric film comprising polymer-based piezoelectric material, poly(L-lactic acid) (PLLA) nanofiber mesh configured to, when placed in an electrolytically conductive environment comprising water and stimulated with the ultrasonic acoustic pressure, vibrate generating electricity to locally decomposes the water into reactive oxygen species (ROS) to induce a broad-spectrum bactericidal effect.
    Type: Application
    Filed: June 8, 2021
    Publication date: December 9, 2021
    Inventors: Thanh Duc Nguyen, Eli Curry, Ritopa Das, Yang Liu
  • BIODEGRADABLE PIEZOELECTRIC NANOFIBER SCAFFOLD FOR BONE OR TISSUE REGENERATION
    Publication number: 20200276018
    Abstract: A scaffold comprised of a plurality of PLLA layers, which may include stem cells, for regenerating bone or tissue. The PLLA layers are separated by a plurality of hydrogel layers. The PLLA layers comprise a nanofiber mesh having a piezoelectric constant to apply an electrical charge to the bone or tissue upon application of ultrasound energy.
    Type: Application
    Filed: March 2, 2020
    Publication date: September 3, 2020
    Inventors: Thanh Duc Nguyen, Ritopa Das