Patents by Inventor Barbara Karavias

Barbara Karavias 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).

  • Folding lunch box
    Patent number: 5123540
    Abstract: A collapsible lunch box that can be folded into a flat package for storage when not in use and can be made ready for use by changing the package into a rectangular tube and pivoting two side panels to close the open ends of the tube. The side panels have locking elements which engage openings on the rectangular tube to keep the box closed. In the folded package position the locking elements on the side panels interlock to hold the package in the folded position.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: June 23, 1992
    Inventor: Barbara Karavias