Patents by Inventor Timothy Lichtenstein

Timothy Lichtenstein 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).

  • Redox active polymers and colloidal particles for flow batteries
    Patent number: 9982068
    Abstract: The invention provides a redox flow battery comprising a microporous or nanoporous size-exclusion membrane, wherein one cell of the battery contains a redox-active polymer dissolved in the non-aqueous solvent or a redox-active colloidal particle dispersed in the non-aqueous solvent. The redox flow battery provides enhanced ionic conductivity across the electrolyte separator and reduced redox-active species crossover, thereby improving the performance and enabling widespread utilization. Redox active poly(vinylbenzyl ethylviologen) (RAPs) and redox active colloidal particles (RACs) were prepared and were found to be highly effective redox species. Controlled potential bulk electrolysis indicates that 94-99% of the nominal charge on different RAPs is accessible and the electrolysis products are stable upon cycling. The high concentration attainable (>2.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: May 29, 2018
    Assignee: The Board of Trustees of the University of Illinois
    Inventors: Nagarjuna Gavvalapalli, Jeffrey S. Moore, Joaquin Rodriguez-Lopez, Kevin Cheng, Mei Shen, Timothy Lichtenstein
  • REDOX ACTIVE POLYMERS AND COLLOIDAL PARTICLES FOR FLOW BATTERIES
    Publication number: 20160208030
    Abstract: The invention provides a redox flow battery comprising a microporous or nanoporous size-exclusion membrane, wherein one cell of the battery contains a redox-active polymer dissolved in the non-aqueous solvent or a redox-active colloidal particle dispersed in the non-aqueous solvent. The redox flow battery provides enhanced ionic conductivity across the electrolyte separator and reduced redox-active species crossover, thereby improving the performance and enabling widespread utilization. Redox active poly(vinylbenzyl ethylviologen) (RAPs) and redox active colloidal particles (RACs) were prepared and were found to be highly effective redox species. Controlled potential bulk electrolysis indicates that 94-99% of the nominal charge on different RAPs is accessible and the electrolysis products are stable upon cycling. The high concentration attainable (>2.
    Type: Application
    Filed: January 19, 2016
    Publication date: July 21, 2016
    Applicant: The Board of Trustees of the University of Illinois
    Inventors: Nagarjuna Gavvalapalli, Jeffrey S. Moore, Joaquin Rodriguez-Lopez, Kevin Cheng, Mei Shen, Timothy Lichtenstein