Patents by Inventor J. Gus Prokopis

J. Gus Prokopis 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).

  • Level-indicating pizza box
    Patent number: 5887783
    Abstract: A disposable foldable rectangular cardboard pizza box has a lid portion having a denoted center which receives a domed spirit level. The spirit level, preferably secured to the box by contact adhesive, facilitates manipulation of the box to a horizontal position.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: March 30, 1999
    Inventor: J. Gus Prokopis