Patents by Inventor Ingemar W. Ohlsson

Ingemar W. Ohlsson 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 for the manufacture of packing containers
    Patent number: 4151024
    Abstract: A method is disclosed for fabricating packing containers comprised of a heat-shrinkable material. A web or blank of the material is heated on one side to an extent such that the material acquires a tendency to assume a tubular shape. Overlapping longitudinal ends of the web or blanks are heat and pressure sealed to form a tubular member. The ends of the tubular member are folded inwardly under the effect of heat to form flange-like portions to which end plates may be attached to form the packing container.
    Type: Grant
    Filed: March 16, 1977
    Date of Patent: April 24, 1979
    Assignee: Tetra Pak Development
    Inventor: Ingemar W. Ohlsson