Patents by Inventor Edward D. MacMurtrie

Edward D. MacMurtrie 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).

  • Patent number: 4357669
    Abstract: The output oil from a solvent dewaxing unit is controlled so that it is provided as product oil when the wax content of the output oil is within a predetermined limit, or not provided as product oil when the wax content is not within the predetermined limit. The output oil from the dewaxing unit is sampled and solvent in the sample oil is removed. The solvent-free sample oil is chilled to a predetermined temperature. An analyzer receives the chilled sample oil and provides a signal corresponding to the wax content of the sample oil. A network coupled to the analyzer provides a control signal of one amplitude when the signal from the analyzer is within a predetermined limit and of another amplitude when the signal from the analyzer is not within the predetermined limit.
    Type: Grant
    Filed: September 24, 1980
    Date of Patent: November 2, 1982
    Assignee: Texaco Inc.
    Inventors: Frederick C. Alverson, Edward D. MacMurtrie, Norman R. Odell