Patents by Inventor Hans Bickenbach

Hans Bickenbach 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).

  • Method and device for confirming the authenticity of a document and a safe for storing data
    Publication number: 20050066172
    Abstract: The invention relates to a method for confirming the authenticity of a document. According to the invention, said method is carried out in such a way that the authenticity is confirmed using a digital signature, the signed confirmation of authenticity is integrated into the document by means of a secret watermark and that the document is also provided with a public watermark.
    Type: Application
    Filed: July 18, 2002
    Publication date: March 24, 2005
    Inventors: Dr Jan Vorbruggen, Wolfgang Kubbilun, Dr Eckhard Koch, Ingo Kubbilun, Hans Bickenbach, Marcus Belke