Patents by Inventor Alfred Preis

Alfred Preis 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).

  • Small thermoelectric cooler
    Patent number: 4581898
    Abstract: A one piece metal cooling container has one or more upright cavities open at the top for reception of material to be cooled. A Peltier effect cooling element has one working surface in heat-conductive contact with the cooling container and an opposite working surface in heat-conductive contact with a heat sink. The heat sink has spaced cooling ribs projecting from the surface of the heat sink opposite its surface in contact with the Peltier element.
    Type: Grant
    Filed: January 29, 1985
    Date of Patent: April 15, 1986
    Inventor: Alfred Preis