Patents by Inventor Robert C. W. Welch

Robert C. W. Welch 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).

  • Low-sulfur fuel
    Patent number: 6843905
    Abstract: The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment, process involves separating a catalytically cracked naphtha into at least a light fraction boiling below about 165° F. and a heavy fraction boiling above about 165° F. The light fraction is treated to remove sulfur by a non-hydrotreating method, and the heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.
    Type: Grant
    Filed: January 15, 2003
    Date of Patent: January 18, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Gordon F. Stuntz, Robert C. W. Welch, Thomas R. Halbert
  • Low-sulfur fuel
    Publication number: 20040222130
    Abstract: The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment, process involves separating a catalytically cracked naphtha into at least a light fraction boiling below about 165° F. and a heavy fraction boiling above about 165° F. The light fraction is treated to remove sulfur by a non-hydrotreating method, and the heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.
    Type: Application
    Filed: June 10, 2004
    Publication date: November 11, 2004
    Inventors: Gordon F. Stuntz, Robert C.W. Welch, Thomas R. Halbert
  • Low-sulfur fuel
    Publication number: 20030188994
    Abstract: The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment, process involves separating a catalytically cracked naphtha into at least a light fraction boiling below about 165° F. and a heavy fraction boiling above about 165° F. The light fraction is treated to remove sulfur by a non-hydrotreating method, and the heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.
    Type: Application
    Filed: January 15, 2003
    Publication date: October 9, 2003
    Inventors: Gordon F. Stuntz, Robert C. W. Welch, Thomas R. Halbert
  • Low-sulfur fuel and process of making
    Patent number: 6610197
    Abstract: The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment, process involves separating a catalytically cracked naphtha into at least a light fraction boiling below about 165° F. and a heavy fraction boiling above about 165° F. The light fraction is treated to remove sulfur by a non-hydrotreating method, and the heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: August 26, 2003
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Gordon F. Stuntz, Robert C. W. Welch, Thomas R. Halbert
  • Low-sulfur fuel
    Publication number: 20020084211
    Abstract: The invention relates to a process for forming a low-sulfur motor gasoline and the product made therefrom. In one embodiment, process involves separating a catalytically cracked naphtha into at least a light fraction boiling below about 165° F. and a heavy fraction boiling above about 165° F. The light fraction is treated to remove sulfur by a non-hydrotreating method, and the heavy fraction is hydrotreated to remove sulfur to a level of less than about 100 ppm.
    Type: Application
    Filed: October 12, 2001
    Publication date: July 4, 2002
    Inventors: Gordon F. Stuntz, Robert C. W. Welch, Thomas R. Halbert