Patents by Inventor Robert E. Heigold

Robert E. Heigold 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).

  • Diluent distillation process and apparatus
    Patent number: 4661242
    Abstract: An improvement in a process for the treatment of heavy oil in which a hydrocarbon diluent is subjected to distillation prior to its addition to a heavy oil production stream, to remove at least some of the light components in the diluent that would otherwise vaporize in the treatment process. A distillation unit for use in the process is also disclosed.
    Type: Grant
    Filed: June 12, 1985
    Date of Patent: April 28, 1987
    Assignee: Delta Projects Inc.
    Inventors: Jeffery E. Scott, David W. McDougall, Robert E. Heigold