Patents by Inventor Pavan Puttamraju

Pavan Puttamraju 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).

  • Method for removing per- and polyfluoroalkyl substances (PFAS) from waste water
    Patent number: 11840471
    Abstract: Disclosed is a method for enhancing the removal of a per- and polyfluoroalkyl substances (PFAS) component from waste water using a cationic polymer (e.g., a cationic polymer flocculant or coagulant). The cationic polymer enables gas that is diffused through the waste water to carry at least a portion of the PFAS component to the surface of water, creating a foam that can then be removed.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: December 12, 2023
    Assignee: REPUBLIC SERVICES, INC.
    Inventors: Pavan Puttamraju, Kevin D. Torrens, Yun Yu