Patents by Inventor Stefan W. Opitz

Stefan W. Opitz 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).

  • Publication number: 20090057326
    Abstract: A seal for a container of fine particulate materials that includes a sifter insert. The seal comprises a base that is secured over a plurality of holes in the insert by a releasable pressure-sensitive adhesive. A pull tab extends outwardly from an upper surface of said base. The pull tab is fixedly adhered to the upper surface of the base and extends outwardly away from a mid-section thereof. The pull tab is pivotable through 180 degrees about its connection point with the base and remains fixedly secured thereto when a pulling force is applied to the pull tab. The adhesive bond between the base and the insert is weaker than the adhesive bond between the pull tab and the base. Consequently, a pulling force applied to the pull tab removes the base from the insert and permits particulate material to be dispensed through the holes in the insert.
    Type: Application
    Filed: August 29, 2007
    Publication date: March 5, 2009
    Inventor: Stefan W. Opitz