Patents by Inventor Knut Schumacher

Knut Schumacher 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).

  • Electrochemical display device
    Publication number: 20070064303
    Abstract: An electrochemical display device capable of irreversibly switching from a first indicating state to a second indicating state comprises a substrate (12) having an electrically insulating surface (16), and a first electrode (30) located on at least a part of said surface (16) of said substrate (12), wherein said substrate (12), at least within said part of its surface (16) is light-transmissive, the transmissivity of the combination of said substrate (12) and said first electrode (30) being less than that of said part of said substrate (12).
    Type: Application
    Filed: September 14, 2004
    Publication date: March 22, 2007
    Inventors: Knut Schumacher, Anton Kuepper