Patents by Inventor Jan Barthel

Jan Barthel 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).

  • Patent number: 4495597
    Abstract: Microprocessor-controlled adapter circuit for real-time controls, in particular for print hammer controls in line printers with revolving type carrier with two asynchronously driven FIFO buffers (FIRST IN, FIRST OUT). The first FIFO buffer contains time values (e.g., firing times for the print hammers) and the second FIFO buffer control information associated with these time values (e.g., print hammer address, control commands for the print hammer). By a request circuit (e.g., counters), the time values are successively read from the first FIFO buffer and fed to a gate circuit for switching the control information, associated with these time values, from the second FIFO buffer for controlling the output values.
    Type: Grant
    Filed: August 2, 1982
    Date of Patent: January 22, 1985
    Assignee: International Business Machines Corporation
    Inventors: Jan Barthel, Hermann R. Bublitz
  • Patent number: D357675
    Type: Grant
    Filed: August 3, 1992
    Date of Patent: April 25, 1995
    Assignee: International Business Machines Corporation
    Inventors: Wolfgang Guber, Wolfgang Fischer, Dirk Willuhn, Ulrich Hengstler, Berthold Gerber, Jan Barthel, Wilfried Bruegmann