Patents by Inventor Rodney D. Dougan

Rodney D. Dougan 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).

  • Food grade compressor oil
    Patent number: 5578557
    Abstract: A food grade compressor oil for use in a high pressure compressor includes a base oil, an N-acyl derivative of the amino acid sarcosine, an imidazoline, and an amine-phosphate. Each of the three additives comprises no more than 0.5% by weight of the oil composition, and results in high lubricity and very low corrosion even when water is present in the oil. The compressor oil may also include polybutene which serves as a thickener, and an antioxidant. The compressor oil of this invention is particularly well suited for use in a hypercompressor used in the manufacture of polyethylene.
    Type: Grant
    Filed: April 1, 1996
    Date of Patent: November 26, 1996
    Assignee: Lyondell Petrochemical Company
    Inventors: Rodney D. Dougan, Cline A. Tincher, Thomas F. Wulfers