Patents by Inventor Charles Van Gelder

Charles Van Gelder 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).

  • Safety entrance for garbage grinder
    Patent number: 6000643
    Abstract: A guarding device to guard a household garbage grinder from inadvertent introduction of metal material into said grinder. The guard comprises a magnet around the entrance to the grinder to form a magnetic field across the entrance so that ferrous metals will be attracted to the magnet.
    Type: Grant
    Filed: October 20, 1997
    Date of Patent: December 14, 1999
    Inventor: Charles Van Gelder