Patents by Inventor John W. McConville

John W. McConville 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).

  • Transparent overlay for protecting a document from tampering
    Patent number: 5060981
    Abstract: A transparent overlay that can protect a document from tampering has a transparent cover sheet, a layer of hot-melt adhesive over one surface of the transparent cover sheet, and a polymeric image-receiving layer over the exposed face of said hot-melt adhesive layer. The transparent cover sheet can be a simple thermoplastic film but preferably is retroreflective sheeting which can bear a pattern or legend that is noticeable only when viewed retroreflectively. When the polymeric image-receiving layer is dye-receptive, it can be imaged by using a thermal printing head with a dye-donor element. A preferred polymeric image-receiving layer that is dye-receptive is chlorinated poly(vinylchloride).
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: October 29, 1991
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Douglas K. Fossum, Susan K. Jongewaard, John W. McConville
  • Transparent tamper-indicating document overlay
    Patent number: 4968063
    Abstract: A transparent overlay that can protect a document from tampering has a transparent cover sheet, a layer of hot-melt adhesive over one surface of the transparent cover sheet, and an image formed on the exposed face of said hot-melt adhesive layer. The transparent cover sheet can be a simple thermoplastic film but preferably is retroreflective sheeting which can bear a pattern or legend that is noticeable only when viewed retroreflectively.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: November 6, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: John W. McConville, Susan K. Jongewaard, Douglas K. Fossum