Patents by Inventor Jesse R. Langston

Jesse R. Langston 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).

  • Waste treatment process for printing operations employing water dispersible inks
    Patent number: 4738785
    Abstract: A waste-treatment process for water-based printing operations which employ inks comprising aqueous dispersions of polyester or polyesteramide materials containing water solubilizing sulfo-salt groups, comprising providing in an agitated vessel a substantially homogenous system of water and multi-valent cation, adding the waste aqueous dispersion of polyester or polyesteramide material from the printing operation to the vessel, allowing ion interchange and insolubilization of the material in the water to occur, and physically separating the water from the insolubilized material.
    Type: Grant
    Filed: February 13, 1987
    Date of Patent: April 19, 1988
    Assignee: Eastman Kodak Company
    Inventors: Jesse R. Langston, Frank J. Tortorici, Fred D. Barlow, Jr.