Patents by Inventor Stephen D. Lakes

Stephen D. Lakes 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).

  • Protective coating for thermosensitive material
    Patent number: 4740495
    Abstract: A protective coating is applied to a thermally reactive material layer in laminate manner. The coating includes a fluorocarbon sizing agent which causes beading of any adverse material and prevents penetration thereof into the thermally reactive material. A combined color developing and dye formulation includes bisphenol, wax, clay and dye in a binder of polyvinyl alcohol which effects a spreading of any adverse material on the surface of the coating.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: April 26, 1988
    Assignee: NCR Corporation
    Inventors: Nicola Marinelli, Maurice W. Lewis, Stephen D. Lakes, Paul W. Seitz
  • Protective barrier and method of providing same for thermosensitive sheet
    Patent number: 4641159
    Abstract: A thermosensitive sheet includes a support layer or substrate, a thermally reactive coating or layer on the substrate, and an impervious cellulose based layer on the thermally reactive coating. The thermally reactive coating acts as an adhesive for laminating the cellulose based layer and the substrate. A method of providing the protective barrier is also disclosed.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: February 3, 1987
    Assignee: NCR Corporation
    Inventors: Paul W. Seitz, Maurice W. Lewis, Stephen D. Lakes
  • Multiple copy thermal record sheet
    Patent number: 4523207
    Abstract: A thermal-sensitive record sheet copy system provides multiple copies by applying a coating to one record sheet. The single coating formulation includes ingredients which react to heat to provide a tacky condition having a desirable adhering property and thereby produce images on the two sheets. The coating includes a binder of synthetic polyterpene in the mixture in combination with a thermochromic dye and a phenolic resin.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: June 11, 1985
    Assignee: NCR Corporation
    Inventors: Maurice W. Lewis, Stephen D. Lakes