Patents by Inventor Susan Rahfield

Susan Rahfield 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).

  • Composition for rust removal and method of use thereof
    Patent number: 4828743
    Abstract: A non-phosphate cleaning composition, having enhanced rust removal properties at ambient temperatures, comprising oxalic acid and an activating amount of ferrous ion. This formulation removes rust better than formulations not containing the activating amount of ferrous ion.
    Type: Grant
    Filed: November 20, 1987
    Date of Patent: May 9, 1989
    Assignee: Boyle-Midway Household Products, Inc.
    Inventors: Susan Rahfield, Benjamin Newman