Patents by Inventor Erwin Heller

Erwin Heller 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).

  • Package for paste-like products and wrapper blank for use with the package
    Patent number: 4733779
    Abstract: A package for slabs of butter of the type including a lower tray part and an upper tray part wherein the lower tray part does not have any edges protruding beyond the plane of a middle butter support field so that the butter can easily be cut into portions with a knife. The upper tray part, with its edge, engages a continuous furrow in the edge region of the lower tray part, where it is retained by friction. The slab of butter is covered with a wrapper material on its five sides above the support side on the lower tray part. The butter is thereby protected both mechanically and physically and it is very convenient to remove servings thereof.
    Type: Grant
    Filed: January 27, 1987
    Date of Patent: March 29, 1988
    Assignee: SIG Schweizerische Industrie-Gesellschaft
    Inventors: Hans Hubmann, Erwin Heller