Patents by Inventor Malcolm L. Campbell

Malcolm L. Campbell 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).

  • Benzene recovery process
    Patent number: 4431521
    Abstract: A process is disclosed for improving the recovery of benzene from a reforming process by adding to the reformer effluent a heavy oil, then recovering the benzene in a flash drum.
    Type: Grant
    Filed: September 27, 1982
    Date of Patent: February 14, 1984
    Assignee: Exxon Research & Engineering Co.
    Inventors: John C. Roarty, Malcolm L. Campbell