Patents by Inventor Joseph J. Tippmann

Joseph J. Tippmann 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).

  • Method of making a frameless refrigerated storage enclosure
    Patent number: 4925509
    Abstract: A refrigerated storage enclosure has its wall, floor and roof panels made of polyurethane initially joined together by skewers. The inside surfaces of the panels are covered with a layer of fiberglass reinforced resin to permanently join the panels as is the entire outside thereby forming a monolithic structure. A door is provided in an opening in one of the walls and a skid is attached to the underside of the floor panel with fiberglass reinforced resin.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: May 15, 1990
    Inventor: Joseph J. Tippmann