Patents by Inventor Josef Hartmut Esterhammer

Josef Hartmut Esterhammer 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).

  • Method of producing a package
    Patent number: 3956867
    Abstract: In the present method a package is produced by forming a pouch in a first foil thereby stretching the material thus creating latent shrinking forces. The package is sealed using a second flat foil or a foil having a pouch extending to the opposite direction as the first pouch. The sealing is done inside an evacuated space and the heating of the first foil in order to shrink the pouch is done prior to or at the same time as the vacuum space is aerated.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: May 18, 1976
    Assignees: Multivac Sepp Haggenmueller KG, Alkor-Werk Karl Lissmann KG
    Inventors: Kastulus Utz, Josef Hartmut Esterhammer, Arthur Vetter