Patents Assigned to Swag Zschokke Wartmann AG
  • Method of drying lumpy agricultural products
    Patent number: 5188856
    Abstract: After a thermal treatment the products are subjected to an overpressure treatment of at least 10 seconds. Afterwards, an expansion is effected from the state of overpressure directly to the state of vacuum, wherewith the cells are opened such that the subsequent drying in the vacuum proceeds faster and a porous structure is arrived at.
    Type: Grant
    Filed: April 1, 1991
    Date of Patent: February 23, 1993
    Assignee: Swag Zschokke Wartmann AG
    Inventors: Wolfgang Hinz, Ernst Gass