Patents by Inventor Liliana Z. Pillon

Liliana Z. Pillon 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).

  • Method for improving the demulsibility of base oils
    Patent number: 5282960
    Abstract: Lube oil basestocks having an oil/water interfacial tension (.gamma. o/w) of less than 41 mN/m, preferably less than about 35 mN/m which exhibit unacceptable demulsibility can have their demulsibility performance improved by contacting said lube oil basestock with an acidic ion exchange resin, such as Amberlyst AR-15, or with silica. The treated lube oil base stock exhibits an oil/water interfacial tension (.gamma. o/w) of at least about 41 mN/m, preferably at least about 42 mN/m.
    Type: Grant
    Filed: October 2, 1991
    Date of Patent: February 1, 1994
    Assignee: Exxon Research and Engineering Company
    Inventors: Liliana Z. Pillon, Andre E. Asselin