Patents by Inventor Roland Quong

Roland Quong 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).

  • Large-scale production of anhydrous nitric acid and nitric acid solutions of dinitrogen pentoxide
    Patent number: 6200456
    Abstract: A method and apparatus are disclosed for a large scale, electrochemical production of anhydrous nitric acid and N2O5. The method includes oxidizing a solution of N2O4/aqueous-HNO3 at the anode, while reducing aqueous HNO3 at the cathode, in a flow electrolyzer constructed of special materials. N2O4 is produced at the cathode and may be separated and recycled as a feedstock for use in the anolyte. The process is controlled by regulating the electrolysis current until the desired products are obtained. The chemical compositions of the anolyte and catholyte are monitored by measurement of the solution density and the concentrations of N2O4.
    Type: Grant
    Filed: April 13, 1987
    Date of Patent: March 13, 2001
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Jackson E. Harrar, Roland Quong, Lester P. Rigdon, Raymond R. McGuire