Patents by Inventor Ronald J. Krenn

Ronald J. Krenn 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: 5355289
    Abstract: A lighted serving tray includes a tray portion having a flat bottom surface, a perimeter rim, and a hollow transparent tube attached to the tray adjacent to the perimeter rim. A plurality of lights are attached in the transparent tube in a spaced relationship to each other and a battery is connected through an electrical conductor to each of the lights through a switch. A flashing circuit can be connected in the circuit. The lights can be LED's and the hollow tube can be detached to form a circle around the circular tray so that the lighted tray is visible within an area of low light when being carried by a waitress or the like.
    Type: Grant
    Filed: August 2, 1993
    Date of Patent: October 11, 1994
    Inventor: Ronald J. Krenn