Patents by Inventor Katherine Janzen

Katherine Janzen 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).

  • Patent number: 6185844
    Abstract: A pair of disposable absorbent shoe inserts includes first and second inserts, each including a porous upper layer which allows moisture to pass from the user's foot into an absorbent middle layer. A lower surface of the absorbent middle layer is attached to an impervious lower layer 40 which prevents moisture contact with the insole of the shoe. A lower surface of the impervious lower layer is attached to a release material layer 50 having a first pattern. A second shoe insert is similarly constructed, but provides a release material layer having a second pattern which is approximately a reverse image of the first pattern, and is non-overlaying to the first pattern. As a result, each insert acts as a release layer for the other insert. The layers of each insert are ultra thin and are bonded together to form a tapered edge around the circumference of the insert.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: February 13, 2001
    Inventor: Katherine Janzen