Patents Examined by Warren D. Griffin
  • Selective hydrodesulfurization of naphtha using spent resid catalyst
    Patent number: 5423975
    Abstract: Naphtha is selectively hydrodesulfurized using spent resid upgrading catalyst to remove sulfur while minimizing loss in octane level due to olefin saturation.
    Type: Grant
    Filed: July 8, 1992
    Date of Patent: June 13, 1995
    Assignee: Texaco Inc.
    Inventors: Chakka Sudhakar, Gerald G. Sandford, Ajit K. Bhattacharya