Patents by Inventor Barbara D. Illk

Barbara D. Illk 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).

  • Infusion package
    Patent number: 4680185
    Abstract: An infusion package, such as a tea bag, having porous side panels and an open mouth through which material may be inserted. Edges of the package at the mouth are foldable over each other to close the mouth. A string on the folded over portions is extended through an aperture remote from the mouth and serves to inhibit unfolding.
    Type: Grant
    Filed: February 6, 1986
    Date of Patent: July 14, 1987
    Inventor: Barbara D. Illk