Patents by Inventor Werner Ruetschi

Werner Ruetschi 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).

  • Liquid package with aseptic properties and a method of producing such a package
    Patent number: 5385294
    Abstract: The invention describes a liquids package comprising a tube with side walls at the ends of which there are fitted a flat bottom (3) and a top which incorporates a pourer orifice, the tube consisting of paper and the bottom (3) being so welded to the tube along part of an edge by means of a plastics rim (21) that the flat main area (14) of the bottom (3) is disposed at a distance from the outer cut edge of the tube. So that the package can also be constructed for aseptic purposes and in order to render production simple and economical, it is envisaged that the bottom (3) comprise, separate from the tube, a main area (14) of paper coated with synthetic plastics material, being provided with a metal interlining, like the tube.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: January 31, 1995
    Assignee: Tetra Pak Holdings S.A.
    Inventors: Par Andersson, Werner Ruetschi
  • Method of producing an aseptic package for liquids
    Patent number: 5074099
    Abstract: The invention describes a liquids package comprising a tube with side walls at the ends of which there are fitted a flat bottom (3) and a top which incorporates a pourer orifice, the tube consisting of paper and the bottom (3) being so welded to the tube along part of an edge by means of a plastics rim (21) that the flat main area (14) of the bottom (3) is disposed at a distance from the outer cut edge of the tube. So that the package can also be constructed for aseptic purposes and in order to render production simple and economical, it is envisaged that the bottom (3) comprise, separate from the tube, a main area (14) of paper coated with synthetic plastics material, being provided with a metal interlining, like the tube.
    Type: Grant
    Filed: December 28, 1989
    Date of Patent: December 24, 1991
    Assignee: Tetra Pak Holdings S.A.
    Inventors: Par Andersson, Werner Ruetschi