Patents by Inventor Anthony Patrick Hagan

Anthony Patrick Hagan 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).

  • Upgrading of pre-processed used oils
    Patent number: 7261808
    Abstract: A process to further upgrade a pre-processed used lubricating oil by: (a) contacting the partially upgraded used oil in the presence of hydrogen with a hydrodemetallization catalyst; (b) contacting the effluent of step (a) in the presence of hydrogen with a hydrotreating catalyst; (c) contacting the effluent of step (b) in the presence of hydrogen with a dewaxing catalyst; and (d) contacting the effluent of step (c) in the presence of hydrogen with a hydrotreating catalyst.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: August 28, 2007
    Assignee: Shell Oil Company
    Inventors: Pierre Grandvallet, Anthony Patrick Hagan, Laurent Georges Huve