Patents by Inventor John C. Siegele

John C. Siegele 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).

  • Deep drawn paperboard container and process for making it
    Patent number: 4026458
    Abstract: Disclosed is a deep drawn paperboard container and a process for making it. The container has an inner wall comprising a water impermeable layer coated on a specific paperboard substrate. The deep drawn container is greater than about 1.375 inches deep, has a radius of curvature of its bottom corners of less than about 7/8 inches and an angle of inclination of its side walls of less than about 20.degree. from the vertical.
    Type: Grant
    Filed: March 27, 1975
    Date of Patent: May 31, 1977
    Assignee: International Paper Company
    Inventors: Jerald A. Morris, John C. Siegele