Patents by Inventor Zanarini Gianfranco

Zanarini Gianfranco 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).

  • Disposable filter for preparation of hot brewed beverage
    Patent number: 5582731
    Abstract: A disposable filter bag for preparation of hot brewed beverages, particularly for the preparation of American coffee, comprises a double layer of water permeable paper material in which a chamber is delimited by weak weldings with a batch of ground coffee contained therein. The filter bag features wings foldable inwards over the chamber for reduction of the package size. To use the filter bag the wings are opened and the upper edges are separated so as to allow the weak weldings to be peeled off for complete opening of the filter bag inside a basket.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: December 10, 1996
    Assignee: M.T.R. S.r.l.
    Inventor: Zanarini Gianfranco