Patents by Inventor Alan A. Millard

Alan A. Millard 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).

  • Styrene-dialkyl maleate copolymers as dewaxing agents
    Patent number: 4564438
    Abstract: A solvent dewaxing process for dewaxing waxy lubricating oil with a dewaxing solvent and a dewaxing aid which comprises using as the dewaxing aid a styrene dialkyl maleate copolymer wherein the side chain groups contain from C.sub.16 -C.sub.24.sup.+ carbon atoms. These polymers are further characterized as having a molecular weight within the range of 10,000-150,000.
    Type: Grant
    Filed: May 31, 1985
    Date of Patent: January 14, 1986
    Assignee: Nalco Chemical Company
    Inventors: Sophia Wang, Alan A. Millard