Patents by Inventor Knut Johan Vilhelm Jonsson

Knut Johan Vilhelm Jonsson 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).

  • Pilferproof closure for bottles, tubes and similar containers
    Patent number: 4029231
    Abstract: A pilferproof closure is disclosed having an inner cap and an outer cap. The inner cap is joined together with the outer cap and thus the closure is not removable from a container before the connection between the inner cap and the outer cap has been broken. Inwardly directed projections are provided on said inner cap and arranged to be brought into engagement with the neck of the container to form a childproof reusable closure after the original closure has been broken.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: June 14, 1977
    Assignee: AB Wicanders Korkfabriker
    Inventor: Knut Johan Vilhelm Jonsson