Patents by Inventor Jurgen Koehn

Jurgen Koehn 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 apparatus for changing the moisture content of tobacco
    Patent number: 3948277
    Abstract: The moisture content of a stream of tobacco leaves is increased during travel through a rotary drum wherein the leaves are contacted by and exchange heat and moisture with a current of hot humid air which flows concurrent with the leaves. The moisture content of air is regulated in dependency on deviations of the final moisture content of tobacco leaves from a desired final moisture content by varying the temperature of a shower of water droplets across which the air current passes on its way into the inlet end of the drum. The temperature of air is normally constant but is changed when the initial moisture content of tobacco leaves exceeds the desired final moisture content.
    Type: Grant
    Filed: August 17, 1973
    Date of Patent: April 6, 1976
    Assignee: Hauni-Werke Korber & Co. KG
    Inventors: Waldemar Wochnowski, Hans Forster, Jurgen Koehn, Reinhard Hohm