Patents by Inventor James E. Shewmaker

James E. Shewmaker 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 removing oil-based materials from water surface
    Patent number: 4293348
    Abstract: A method for removing oil-based materials floating on the surface of ballast water contained in the ballast tank of a cargo carrier having vertical steel surfaces is provided comprising adding to said surface a spreading agent having a spreading force greater than said oil-based material in an amount sufficient to force substantially all of said material against said surfaces; and discharging said ballast water from said tank at a point below the surface of said water, said oil-based material being forced to deposit on said steel surfaces vacated by said discharged water.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: October 6, 1981
    Assignee: Exxon Research & Engineering Co.
    Inventor: James E. Shewmaker