Patents by Inventor Willi Buhn

Willi Buhn 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 a device for the protected transmission of data
    Patent number: 5245655
    Abstract: A ciphering device (1) encodes the original data and converts it into signals for an output device (5) that creates a document (6, 10) out of them. This document is fed into a sending device (12) that scans the data (7) line by line and converts the result into signals that are transmitted to a receiving device (13) via a transmission link (14). The receiving device (13) produces a copy (15) of the document (6, 10) out of the transmitted signals, which is fed into a reading device (17). This device converts the data into signals for a deciphering device (18) which decodes the data and converts it into signals for an output device (20). From them, the output device (20) restores the original data and makes it available for further processing.The transmitting device (12), the receiving device (13) and the transmission link (14) form a telecopying system.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: September 14, 1993
    Inventors: Willi Buhn, Erich Naf