Patents by Inventor Mark H. F. Dudzik

Mark H. F. Dudzik 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).

  • Closure device with roller-operated tear tab
    Patent number: 5531340
    Abstract: A tamper-evident closure device (11) for a container (10) has a tear tab (17) which can be at least partially detached by tearing to leave an opening through which the contents of the container (10) can be removed. A roller (18) integral with one edge (17b) of the tab (17) has an operating member (19) for manually rotating the roller (18) back across the tab (17) from the one edge (17b) such that during such rotation the tab (17) is progressively torn away starting at the one edge (17b).
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: July 2, 1996
    Assignee: Galen (Chemicals) Limited
    Inventor: Mark H. F. Dudzik