Patents by Inventor Nettem Choudary Venkateswarlu

Nettem Choudary Venkateswarlu 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).

  • Removal of sulfides in spent caustic stream over active solid phase catalysts
    Patent number: 10800691
    Abstract: The present subject matter relates to the development of active catalyst composite based on supported transition metal oxides, especially, Cu, Co that are effective in the removal sulfides in the diluted spent caustic. The process for the reduction of sulfides in spent caustic comprises of reacting various organic and inorganic sulfides with molecular oxygen in the presence of active catalyst at various reaction temperatures ranging ambient to 200° C. and pressures between atmospheric pressure to 60 bars. The process also relates to complete scheme for the removal of sulfides in spent caustic.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: October 13, 2020
    Assignee: HINDUSTAN PETROLEUM CORPORATION LTD.
    Inventors: Ramesh Kanaparthi, Peddy Venkat Chalapathi Rao, Nettem Choudary Venkateswarlu, Sriganesh Gandham