Patents by Inventor Ludwig Jahnen

Ludwig Jahnen 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).

  • Thin-walled stackable container lid
    Patent number: 4703857
    Abstract: The invention provides a stackable thermoplastic container lid having a U-section sealing rib receivable in a container opening. An outer circular flange on the lid has a depending snap rim provided with bevelled detent elements that can cammingly engage the flange of an identical underlying lid in response to transaxial forces applied to the underlying lid, thereby to lift the sealing rib of the upper lid out of the underlying lid so as to enable lateral bottom-feed of lids from a stack of the same.
    Type: Grant
    Filed: November 19, 1986
    Date of Patent: November 3, 1987
    Assignee: Bellaplast GmbH
    Inventors: Ludwig Jahnen, Manfred Dahler