Patents by Inventor Matthew R. Hanekamp

Matthew R. Hanekamp 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: 5074460
    Abstract: A generally rectangular container fabricated of, for example, a heavy paper material such as pressed paperboard or corrugated cardboard, includes an inner, flexible moisture impermeable bag. The container is constructed so that the side walls, end walls, bottom wall and top wall are foldable to form a thin, flat stack having a rectangular perimeter when not in use for easy storage, and which can be formed into a strong container without the use of fasteners or adhesives.
    Type: Grant
    Filed: October 24, 1990
    Date of Patent: December 24, 1991
    Inventor: Matthew R. Hanekamp