Patents by Inventor Millard C. Bryson

Millard C. Bryson 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).

  • Lube oil hydrotreating process
    Patent number: 3941680
    Abstract: A process for the production of lubricating oil in order to obtain lower viscosity lubricating oils of increased viscosity index by separating a crude lubricating oil into a residual fraction and a distillate fraction and thereafter subjecting the residual fraction to hydrotreating and separately subjecting the distillate fraction to hydrotreating under more severe conditions than employed in hydrotreating the residual fraction.
    Type: Grant
    Filed: October 20, 1971
    Date of Patent: March 2, 1976
    Assignee: Gulf Research & Development Company
    Inventors: Millard C. Bryson, Harry C. Murphy, Jr., James R. Murphy, Harry C. Stauffer