Patents by Inventor Horst-Ditmar Gröne

Horst-Ditmar Gröne 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).

  • Tray for containing foodstuffs and luxury foods which give off liquids
    Patent number: 6216855
    Abstract: Trays are known with two waterproof plastic plies, between which an absorbent paper insert is located, the upper ply (12) having openings (14) for passage of liquid. Re-use of these trays requires separation of the insert from the other plies. According to the invention, the insert (13) also consists of a plastic, i.e. of an open-cell foam plastic. All three plies (11, 12, 13) are compressed together in the area of a surrounding rim (21) so that the insert (13) is no longer open-celled or absorbent in this area.
    Type: Grant
    Filed: June 7, 1999
    Date of Patent: April 17, 2001
    Assignee: Linpac Plastics Limited
    Inventor: Horst-Ditmar Gröne