Patents by Inventor Kurt Ulrich Kalkowski

Kurt Ulrich Kalkowski 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).

  • Protective cover for an electric range
    Patent number: 4045606
    Abstract: A protective for a stove plate of an electric range comprises a heat-resistant aluminum foil into which bulges have been embossed corresponding to the heating units. The embossing is carried out by hand by laying a piece of foil on the stove plate and pressing the foil on and around the heating units. Stripes of a temperature-indicating salt, such as NH.sub.4 MnP.sub.2 O.sub.7, which change color at a predetermined temperature are preferably applied to the foil to give visual indication of over-heating.
    Type: Grant
    Filed: November 21, 1975
    Date of Patent: August 30, 1977
    Inventor: Kurt Ulrich Kalkowski