Patents by Inventor Vinod A. Raje

Vinod A. Raje 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).

  • Salt production from wastewater
    Patent number: 11180397
    Abstract: Many processes generate wastewater streams rich in sulfate and chloride. These salt components are traditionally not recovered and are discharged to the environment. The invention recovers pure water for recycle/reuse and simultaneously generates valuable pure salts of NaCl and Na2SO4 for beneficial reuse, eliminating the waste stream. Process consists of the sequential crystallization of salt products with an intermediate purification step in which a chemical reactant is added to elevate levels of purity. The process is configured to simultaneously achieve zero liquid discharge.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: November 23, 2021
    Assignee: AQUATECH INTERNATIONAL, LLC
    Inventors: Daniel P. Bjorklund, Vinod A. Raje, James M. Marlett, Manish Backliwal, Richard Schoen, Gregory Mandigo
  • SALT PRODUCTION FROM WASTEWATER
    Publication number: 20190169056
    Abstract: Many processes generate wastewater streams rich in sulfate and chloride. These salt components are traditionally not recovered and are discharged to the environment. The invention recovers pure water for recycle/reuse and simultaneously generates valuable pure salts of NaCl and Na2SO4 for beneficial reuse, eliminating the waste stream. Process consists of the sequential crystallization of salt products with an intermediate purification step in which a chemical reactant is added to elevate levels of purity. The process is configured to simultaneously achieve zero liquid discharge.
    Type: Application
    Filed: December 3, 2018
    Publication date: June 6, 2019
    Inventors: Daniel P. Bjorklund, Vinod A. Raje, James M. Marlett, Manish Backliwal, Richard Schoen, Gregory Mandigo