Patents by Inventor Frans J. Roling

Frans J. Roling 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).

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    Patent number: 5152034
    Abstract: A bag closure device made of an extruded synthetic resin material comprising relatively stiff wing portions connected by a living hinge wherein each wing portion has a foot portion with a hook portion at the end thereof for mutual interlocking.
    Type: Grant
    Filed: October 19, 1990
    Date of Patent: October 6, 1992
    Inventors: Frederikus J. J. Konings, Frans J. Roling