Patents by Inventor Bodo Bielefeld

Bodo Bielefeld 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).

  • Printing ribbon
    Patent number: 4064982
    Abstract: An improved printing ribbon for use between a writing electrode and a permeable counterelectrode across which a pulse of predetermined magnitude and duration is applied. The material of the ribbon is such that it experiences multiple electric breakdowns causing it to be propelled through the permeable counterelectrode onto a record sheet held adjacent the permeable counterelectrode outside the sandwich. In a preferred embodiment, the ribbon is provided with a metallized coating which serves as the permeable counterelectrode.
    Type: Grant
    Filed: September 20, 1976
    Date of Patent: December 27, 1977
    Assignee: Triumph Werke Nurnberg A.G.
    Inventors: Rainer Anton, Ernst Beyer, Bodo Bielefeld