Patents by Inventor Ralf Hander

Ralf Hander 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).

  • Apparatus for multi-stage refining of organic bulk materials
    Patent number: 4652430
    Abstract: An apparatus for the multi-stage refining of organic bulk materials according to the fluidized bed principle comprising a plurality of horizontally aligned cells (23) including an upper drying chamber (1), a middle degasification chamber (2) and a lower refining chamber (3) separated from each other by an individual gas permeable floor (19) or a gas impermeable floor (20). Adjacent cells are connected to each other by common discharge/charge chutes having vertical separation walls extending therein.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: March 24, 1987
    Assignee: VEB Schwermaschinenbau "Karl Liebknecht" Magdeburg
    Inventors: Wolfgang Michel, Heinz Paul, Dieter Kostler, Frank Wilhelm, Andreas Rummel, Gero Seher, Wilfried Henze, Ralf Hander, Jurgen Heinemann, Manfred Ossowski