Patents by Inventor Franz C. Heldwein

Franz C. Heldwein 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: 5097949
    Abstract: A static shielding package is disclosed comprising an open end, a folded bottom and sealed side edges formed from a substantially rectangular transparent, flexible laminated segment of sheet material. The sheet material comprises an inner heat sealable carrier layer, an outer protective layer and a conductive layer sandwiched between said carrier layer and protective layer wherein said sheet material is folded over upon itself along a fold region to form the folded bottom of the package. The improvement comprises the addition of an auxiliary strip of static shielding material added to the package in the region of the folded bottom of the package to provide an alternative path for the conduction of electrical energy in the event of a disruption of the primary conductive layer of the package in the region of the fold area.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: March 24, 1992
    Assignee: Westvaco Corporation
    Inventor: Franz C. Heldwein