Patents by Inventor Adrian R. Franke

Adrian R. Franke 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).

  • Coffee filter retainer
    Patent number: 4885987
    Abstract: A device with several embodiments for securing a coffee filter in a coffee maker which will fit most commercially made coffee makers and which uses substantially all of the filter's surface for filtering purposes but does not allow the filter to fall inward on itself to allow coffee grounds to enter the brewed coffee container.
    Type: Grant
    Filed: May 23, 1988
    Date of Patent: December 12, 1989
    Inventors: Adrian R. Franke, Harold L. Hull