Patents by Inventor Ralph A. Montes

Ralph A. Montes 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).

  • Patent number: 4988556
    Abstract: A device for mounting a transparency. The device includes back and front sheets of transparent plastic. The outer edges of the sheets are continuously bonded together. In a preferred embodiment, an opaque coating on the front sheet defines one or more generally rectangular windows. Each window is variously sized to permit the transparency to be viewed therethrough but to prevent light from leaking around the transparency. The sheets are continuously bonded together along three sides of the window to form a pocket between the sheets for mounting the transparency. A slit is formed along a fourth side of the window for inserting the transparency into the pocket.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: January 29, 1991
    Assignee: Block Drug Co., Inc.
    Inventors: Carl G. Nilsen, Gary L. Weisling, Arthur Sternheimer, Ralph A. Montes, Douglas R. Schoen