Patents by Inventor Thomas Hendretti

Thomas Hendretti 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).

  • Permanent coffee filter
    Patent number: 4832845
    Abstract: The present invention relates to a reusable or permanent filter assembly useful in positioning and retaining the ground roast of coffee or tea in a hot water beverage maker. The plastic filter assembly consists of a separable outer container and an inner/perforated filtering element. The filtering element contains a plurality of equidistant holes or perforations that permits the rapid drip of a preferred beverage from the filter assembly.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: May 23, 1989
    Inventor: Thomas Hendretti